diff --git a/packages/core/src/aisdk-native.ts b/packages/core/src/aisdk-native.ts
index 217d8fce280e..6270a25d4912 100644
--- a/packages/core/src/aisdk-native.ts
+++ b/packages/core/src/aisdk-native.ts
@@ -3,18 +3,87 @@ export * as AISDKNative from "./aisdk-native.js"
 import { Effect, Option, Schema, Struct } from "effect"
 import { Provider } from "./provider.js"
 
-export interface Mapping {
-  readonly package: string
-  readonly settings: Provider.Settings
+/** A provider, model, or variant overlay written in legacy AI SDK vocabulary. */
+export interface Overlay {
+  readonly settings?: Provider.Settings
   readonly headers?: Readonly<Record<string, string>>
   readonly body?: Readonly<Record<string, unknown>>
 }
 
-export interface MapInput {
-  readonly packageName: string | undefined
-  readonly settings: Provider.Settings
-  readonly modelID: string
-  readonly providerID: string
+/** Fields the rewrite touches; catalog records and migrated config entries both fit. */
+export interface Target {
+  package?: string
+  settings?: Provider.Settings
+  headers?: Readonly<Record<string, string>>
+  body?: Readonly<Record<string, unknown>>
+}
+
+export interface ModelTarget extends Target {
+  readonly id: string
+  readonly modelID?: string
+  variants?: ReadonlyArray<{ readonly id: string } & Overlay>
+}
+
+/** Rewrites a provider and its models in place so they name native packages and native settings wherever one exists. */
+export function rewrite(provider: Target, models: Iterable<ModelTarget>) {
+  const inherited = Provider.isAISDK(provider.package)
+    ? nativePackage(Provider.packageName(provider.package), undefined, provider.settings)
+    : undefined
+  // Converse request settings depend on the model, so provider-level ones move onto each model first.
+  const converse = inherited === BEDROCK ? Struct.pick(provider.settings ?? {}, CONVERSE_KEYS) : {}
+  if (inherited === BEDROCK && provider.settings) provider.settings = Struct.omit(provider.settings, CONVERSE_KEYS)
+  for (const model of models) {
+    const legacy = model.package ?? provider.package
+    if (!Provider.isAISDK(legacy)) continue
+    if (model.package === undefined) model.settings = Provider.mergeOverlay(converse, model.settings)
+    const modelID = model.modelID ?? model.id
+    const native = nativePackage(
+      Provider.packageName(legacy),
+      modelID,
+      Provider.mergeOverlay(provider.settings, model.settings),
+    )
+    if (!native) continue
+    assign(model, translate(native, model, modelID))
+    model.variants = model.variants?.map((variant) => ({ id: variant.id, ...translate(native, variant, modelID) }))
+    model.package = model.package !== undefined || native !== inherited ? native : undefined
+  }
+  if (!inherited) return
+  assign(provider, translate(inherited, provider))
+  provider.package = inherited
+}
+
+function assign(target: Target, overlay: Overlay) {
+  target.settings = overlay.settings
+  target.headers = overlay.headers
+  target.body = overlay.body
+}
+
+/** Native package replacing a legacy AI SDK package, or undefined when the AI SDK runtime must run it. */
+export function nativePackage(npm: string | undefined, modelID = "", settings?: Provider.Settings) {
+  switch (npm) {
+    case "@ai-sdk/anthropic":
+    case "@ai-sdk/cerebras":
+    case "@ai-sdk/deepinfra":
+    case "@ai-sdk/google":
+    case "@ai-sdk/google-vertex":
+    case "@ai-sdk/groq":
+    case "@ai-sdk/mistral":
+    case "@ai-sdk/openai":
+    case "@ai-sdk/togetherai":
+    case "@ai-sdk/xai":
+    case "@ai-sdk/amazon-bedrock":
+      return `@opencode/ai/providers/${npm.slice("@ai-sdk/".length)}`
+    case "@ai-sdk/amazon-bedrock/mantle":
+      return `@opencode/ai/providers/amazon-bedrock/mantle/${modelID.includes("gpt-oss") ? "chat" : "responses"}`
+    case "@ai-sdk/azure":
+      return `@opencode/ai/providers/azure/${settings?.useCompletionUrls === true ? "chat" : "responses"}`
+    case "@ai-sdk/google-vertex/anthropic":
+      return "@opencode/ai/providers/google-vertex/messages"
+    case "@ai-sdk/openai-compatible":
+      return "@opencode/ai/providers/openai-compatible"
+    case "@openrouter/ai-sdk-provider":
+      return "@opencode/ai/providers/openrouter"
+  }
 }
 
 // A wrongly typed legacy value is dropped rather than failing the whole decode.
@@ -75,51 +144,36 @@ const Legacy = Schema.StructWithRest(
 type Legacy = typeof Legacy.Type
 const decode = Schema.decodeUnknownSync(Legacy)
 
-/** Maps a legacy AI SDK package onto the native package that replaces it. */
-export function map(input: MapInput): Mapping | undefined {
-  const settings = decode(input.settings)
-  const native = mapPackage(input.packageName, input.modelID, settings)
-  if (!native) return
-  const converse = native === "@opencode/ai/providers/amazon-bedrock"
-  const mapped = {
-    ...Struct.omit(settings, ["headers", "extraBody", "useCompletionUrls", ...OPENROUTER_KEYS]),
-    ...(native === "@opencode/ai/providers/openai-compatible" ? { provider: input.providerID } : {}),
-  }
-  return {
-    package: native,
-    settings: native.startsWith("@opencode/ai/providers/amazon-bedrock") ? bedrockSettings(mapped, converse) : mapped,
-    ...(settings.headers === undefined ? {} : { headers: settings.headers }),
-    ...(settings.extraBody === undefined ? {} : { body: settings.extraBody }),
-    ...(converse ? bedrockRequest(input.modelID, settings) : {}),
-    ...(native === "@opencode/ai/providers/openrouter" ? openRouterRequest(settings) : {}),
-  }
+const BEDROCK = "@opencode/ai/providers/amazon-bedrock"
+
+/** Translates one legacy overlay into the spelling `native` reads. Explicit headers and body win over translated ones. */
+export function translate(native: string, overlay: Overlay, modelID = ""): Overlay {
+  const settings = decode(overlay.settings ?? {})
+  const converse = native === BEDROCK
+  // Wrongly typed legacy values decode to undefined; drop them rather than forward them.
+  const mapped = Object.fromEntries(
+    Object.entries(Struct.omit(settings, ["headers", "extraBody", "useCompletionUrls", ...OPENROUTER_KEYS])).filter(
+      ([, value]) => value !== undefined,
+    ),
+  )
+  return defined({
+    settings: native.startsWith(BEDROCK) ? bedrockSettings(mapped, converse) : mapped,
+    headers: Provider.mergeHeaders(
+      native === "@opencode/ai/providers/openrouter" ? openRouterHeaders(settings) : settings.headers,
+      overlay.headers,
+    ),
+    body: Provider.mergeOverlay(
+      Provider.mergeOverlay(settings.extraBody, converse ? bedrockBody(modelID, settings) : undefined),
+      overlay.body,
+    ),
+  })
 }
 
-function mapPackage(packageName: string | undefined, modelID: string, settings: Legacy) {
-  switch (packageName) {
-    case "@ai-sdk/anthropic":
-    case "@ai-sdk/cerebras":
-    case "@ai-sdk/deepinfra":
-    case "@ai-sdk/google":
-    case "@ai-sdk/google-vertex":
-    case "@ai-sdk/groq":
-    case "@ai-sdk/mistral":
-    case "@ai-sdk/openai":
-    case "@ai-sdk/togetherai":
-    case "@ai-sdk/xai":
-    case "@ai-sdk/amazon-bedrock":
-      return `@opencode/ai/providers/${packageName.slice("@ai-sdk/".length)}`
-    case "@ai-sdk/amazon-bedrock/mantle":
-      return `@opencode/ai/providers/amazon-bedrock/mantle/${modelID.includes("gpt-oss") ? "chat" : "responses"}`
-    case "@ai-sdk/azure":
-      return `@opencode/ai/providers/azure/${settings.useCompletionUrls === true ? "chat" : "responses"}`
-    case "@ai-sdk/google-vertex/anthropic":
-      return "@opencode/ai/providers/google-vertex/messages"
-    case "@ai-sdk/openai-compatible":
-      return settings.baseURL === undefined ? undefined : "@opencode/ai/providers/openai-compatible"
-    case "@openrouter/ai-sdk-provider":
-      return "@opencode/ai/providers/openrouter"
-  }
+// Keeps catalog records free of empty overlays.
+function defined(overlay: Overlay): Overlay {
+  return Object.fromEntries(
+    Object.entries(overlay).filter(([, value]) => value !== undefined && Object.keys(value).length > 0),
+  )
 }
 
 // AI SDK spellings the native Bedrock packages do not read.
@@ -132,7 +186,7 @@ const BEDROCK_KEYS = [
   "secretAccessKey",
   "sessionToken",
 ]
-// Request settings Converse takes in the body; translated by `bedrockRequest`.
+// Request settings Converse takes in the body; translated by `bedrockBody`.
 const CONVERSE_KEYS = ["additionalModelRequestFields", "reasoningConfig", "anthropicBeta", "serviceTier"]
 
 function bedrockSettings(settings: Legacy, converse: boolean) {
@@ -158,7 +212,7 @@ function bedrockSettings(settings: Legacy, converse: boolean) {
   }
 }
 
-function bedrockRequest(modelID: string, settings: Legacy): Pick<Mapping, "body"> {
+function bedrockBody(modelID: string, settings: Legacy) {
   const additional = settings.additionalModelRequestFields ?? {}
   const reasoning = settings.reasoningConfig
   const anthropic = modelID.includes("anthropic")
@@ -197,24 +251,22 @@ function bedrockRequest(modelID: string, settings: Legacy): Pick<Mapping, "body"
     ...(fields && Object.keys(fields).length > 0 ? { additionalModelRequestFields: fields } : {}),
     ...(settings.serviceTier === undefined ? {} : { serviceTier: { type: settings.serviceTier } }),
   }
-  return Object.keys(body).length === 0 ? {} : { body }
+  return Object.keys(body).length === 0 ? undefined : body
 }
 
 // Constructor options the native OpenRouter package takes as headers, plus `compatibility`, which the
 // native package would otherwise forward to the request body.
 const OPENROUTER_KEYS = ["appName", "appUrl", "api_keys", "compatibility"] as const
 
-function openRouterRequest(settings: Legacy): Pick<Mapping, "headers"> {
-  const headers =
-    Provider.mergeHeaders(
-      {
-        ...(settings.appName === undefined ? {} : { "X-OpenRouter-Title": settings.appName }),
-        ...(settings.appUrl === undefined ? {} : { "HTTP-Referer": settings.appUrl }),
-        ...(settings.api_keys === undefined || Object.keys(settings.api_keys).length === 0
-          ? {}
-          : { "X-Provider-API-Keys": JSON.stringify(settings.api_keys) }),
-      },
-      settings.headers,
-    ) ?? {}
-  return Object.keys(headers).length === 0 ? {} : { headers }
+function openRouterHeaders(settings: Legacy) {
+  return Provider.mergeHeaders(
+    {
+      ...(settings.appName === undefined ? {} : { "X-OpenRouter-Title": settings.appName }),
+      ...(settings.appUrl === undefined ? {} : { "HTTP-Referer": settings.appUrl }),
+      ...(settings.api_keys === undefined || Object.keys(settings.api_keys).length === 0
+        ? {}
+        : { "X-Provider-API-Keys": JSON.stringify(settings.api_keys) }),
+    },
+    settings.headers,
+  )
 }
diff --git a/packages/core/src/github-copilot/models.ts b/packages/core/src/github-copilot/models.ts
index ef2a74484d69..9562560320bf 100644
--- a/packages/core/src/github-copilot/models.ts
+++ b/packages/core/src/github-copilot/models.ts
@@ -149,7 +149,7 @@ function build(id: Model.ID, remote: UsableModel, baseURL: string, previous?: Mo
     providerID: Provider.ID.githubCopilot,
     family: previous?.family ?? Model.Family.make(remote.capabilities.family),
     name: previous?.name ?? remote.name,
-    package: Provider.aisdk(messages ? "@ai-sdk/anthropic" : "@ai-sdk/github-copilot"),
+    package: messages ? "@opencode/ai/providers/anthropic" : Provider.aisdk("@ai-sdk/github-copilot"),
     settings: Provider.mergeOverlay(previous?.settings, {
       baseURL: messages ? `${baseURL}/v1` : baseURL,
       ...(endpoint ? { endpoint } : {}),
diff --git a/packages/core/src/modal/models.ts b/packages/core/src/modal/models.ts
index 4ee089d71ad0..74d4d4867ab6 100644
--- a/packages/core/src/modal/models.ts
+++ b/packages/core/src/modal/models.ts
@@ -97,7 +97,7 @@ function build(id: Model.ID, remote: RemoteModel, baseURL: string, previous?: Mo
       remote.interleaved === undefined
         ? previous?.compatibility
         : (Model.compatibility(remote.interleaved) ?? previous?.compatibility),
-    package: Provider.aisdk("@ai-sdk/openai-compatible"),
+    package: "@opencode/ai/providers/openai-compatible",
     settings: Provider.mergeOverlay(previous?.settings, { baseURL }),
     headers: previous?.headers,
     body: previous?.body,
diff --git a/packages/core/src/model-resolver.ts b/packages/core/src/model-resolver.ts
index f9de64f3e2c8..c17954be17a0 100644
--- a/packages/core/src/model-resolver.ts
+++ b/packages/core/src/model-resolver.ts
@@ -5,7 +5,6 @@ import { LanguageModel, ProviderConfigurationError } from "@opencode/ai"
 import { Auth } from "@opencode/ai/route"
 import { Context, Effect, Layer, Schema, Struct } from "effect"
 import { AISDK } from "./aisdk.js"
-import { AISDKNative } from "./aisdk-native.js"
 import { Catalog } from "./catalog.js"
 import { Credential } from "./credential.js"
 import { Integration } from "./integration.js"
@@ -195,25 +194,15 @@ const resolveCatalogModel = Effect.fn("ModelResolver.resolveCatalogModel")(funct
   dependencies?: Dependencies,
 ) {
   const resolved = prepareRuntimeModel(model, credential)
-  const packageName = Provider.packageName(resolved.package)
   const configuration = credential?.type === "key" ? credential.configuration : undefined
   const configured = { ...resolved.settings, ...credential?.metadata, ...configuration }
-  const mapping = Provider.isAISDK(resolved.package)
-    ? AISDKNative.map({
-        packageName,
-        settings: configured,
-        modelID: resolved.modelID ?? resolved.id,
-        providerID: resolved.canonical ?? resolved.providerID,
-      })
-    : undefined
-  const native = mapping?.package ?? packageName
-  if (Provider.isAISDK(resolved.package) && !mapping) {
+  if (Provider.isAISDK(resolved.package)) {
     const loadAISDK = dependencies?.loadAISDK
     if (!loadAISDK) return yield* unsupported(resolved)
     const settings = yield* prepareProviderSettings(
       resolved,
       Provider.mergeOverlay(resolved.settings, {
-        ...nativeCredentialSettings(resolved.package ?? "", credential),
+        ...nativeCredentialSettings(resolved.package, credential),
         ...credential?.metadata,
         ...configuration,
       }) ?? {},
@@ -222,19 +211,22 @@ const resolveCatalogModel = Effect.fn("ModelResolver.resolveCatalogModel")(funct
       Effect.mapError((error) => initialization(resolved, "init", error.cause)),
     )
   }
-  if (!native) return yield* unsupported(resolved)
+  const specifier = Provider.packageName(resolved.package)
+  if (!specifier) return yield* unsupported(resolved)
 
-  const specifier = native
-  const mapped = yield* prepareProviderSettings(resolved, Provider.nativeSettings(mapping?.settings ?? configured))
+  const mapped = yield* prepareProviderSettings(resolved, Provider.nativeSettings(configured))
   const module = yield* (dependencies?.loadPackage ?? Provider.loadPackage)(specifier).pipe(
     Effect.mapError((error) => initialization(resolved, "load", error.cause)),
   )
+  // The generic OpenAI-compatible package takes the catalog provider as its identity; others carry their own.
+  const provider =
+    resolved.canonical ?? (specifier === "@opencode/ai/providers/openai-compatible" ? resolved.providerID : undefined)
   const settings = {
     ...(credential ? Struct.omit(mapped, ["accessToken", "apiKey", "authToken"]) : mapped),
-    ...(resolved.canonical === undefined ? {} : { provider: resolved.canonical }),
+    ...(provider === undefined ? {} : { provider }),
     ...nativeCredentialSettings(specifier, credential),
-    headers: Provider.mergeHeaders(mapping?.headers, resolved.headers),
-    body: Provider.mergeOverlay(mapping?.body, resolved.body),
+    headers: resolved.headers,
+    body: resolved.body,
   }
   return yield* Effect.try({
     try: () => {
@@ -424,18 +416,6 @@ function hasConfiguredAuth(model: Info) {
 function usesAPIKeyAuth(packageName: string | undefined) {
   const name = Provider.packageName(packageName)
   return (
-    name === "@ai-sdk/openai" ||
-    name === "@ai-sdk/anthropic" ||
-    name === "@ai-sdk/cerebras" ||
-    name === "@ai-sdk/deepinfra" ||
-    name === "@ai-sdk/openai-compatible" ||
-    name === "@ai-sdk/google" ||
-    name === "@ai-sdk/groq" ||
-    name === "@ai-sdk/mistral" ||
-    name === "@ai-sdk/togetherai" ||
-    name === "@ai-sdk/xai" ||
-    name === "@openrouter/ai-sdk-provider" ||
-    name === "@ai-sdk/azure" ||
     name === "@opencode/ai/providers/openai" ||
     name?.startsWith("@opencode/ai/providers/openai/") === true ||
     name === "@opencode/ai/providers/anthropic" ||
diff --git a/packages/core/src/models-dev.ts b/packages/core/src/models-dev.ts
index a4526d87c5f4..2f4bc118b732 100644
--- a/packages/core/src/models-dev.ts
+++ b/packages/core/src/models-dev.ts
@@ -2,6 +2,7 @@ import { Cause, Context, Duration, Effect, Layer, Option, Schedule, Schema, Sema
 import { HttpClient, HttpClientRequest } from "effect/unstable/http"
 import { ModelsDev } from "@opencode/schema/models-dev"
 import { Money } from "@opencode/schema/money"
+import { AISDKNative } from "./aisdk-native.js"
 import { App } from "./app.js"
 import { Hash } from "@opencode/util/hash"
 import { FSUtil } from "@opencode/util/fs-util"
@@ -87,23 +88,30 @@ function normalize(input: Record<string, SourceProvider>): readonly Snapshot[] {
       id: providerID,
       name: item.name,
       activation: "auto",
-      package: Provider.aisdk(item.npm),
-      ...(item.api ? { settings: { baseURL: item.api } } : {}),
+      ...packageInfo(item.npm, undefined, item.api),
     } satisfies Provider.Info
     const models: Model.Info[] = []
     for (const model of Object.values(item.models)) {
       const baseCost = cost(model.cost)
-      const variants = reasoningVariants(item, model)
+      const npm = model.provider?.npm ?? item.npm
+      const own = packageInfo(npm, model.id, model.provider?.api)
+      const request = {
+        ...own,
+        // Models inherit the provider package unless theirs differs, e.g. Mantle gpt-oss selecting chat.
+        package: own.package === info.package ? undefined : own.package,
+        variants: reasoningVariants(own.package, model),
+      }
       const id = Model.ID.make(model.id)
-      models.push(modelInfo(providerID, id, model, { cost: baseCost, variants }))
+      models.push(modelInfo(providerID, id, model, { ...request, cost: baseCost }))
       for (const [mode, options] of Object.entries(model.experimental?.modes ?? {})) {
         const modeID = Model.ID.make(`${model.id}-${mode}`)
         models.push(
           modelInfo(providerID, modeID, model, {
+            ...request,
             name: modeName(model, mode),
             cost: mergeCost(baseCost, options.cost),
-            request: options.provider,
-            variants,
+            headers: Provider.mergeHeaders(own.headers, options.provider?.headers),
+            body: Provider.mergeOverlay(own.body, options.provider?.body),
           }),
         )
       }
@@ -113,6 +121,18 @@ function normalize(input: Record<string, SourceProvider>): readonly Snapshot[] {
   return providers
 }
 
+/** The catalog package for a models.dev npm package: native where one exists, otherwise the AI SDK runtime. */
+function packageInfo(
+  npm: string,
+  modelID: string | undefined,
+  api: string | undefined,
+): { readonly package: string } & AISDKNative.Overlay {
+  const native = AISDKNative.nativePackage(npm, modelID)
+  const overlay = api === undefined ? {} : { settings: { baseURL: api } }
+  if (!native) return { package: Provider.aisdk(npm), ...overlay }
+  return { package: native, ...AISDKNative.translate(native, overlay, modelID) }
+}
+
 function released(date: string) {
   const time = Date.parse(date)
   return Number.isFinite(time) ? time : 0
@@ -187,14 +207,45 @@ function mergeCost(base: Model.Info["cost"], override: SourceModel["cost"] | und
 const OPENAI_INCLUDE_ENCRYPTED_REASONING = ["reasoning.encrypted_content"]
 const OUTPUT_TOKEN_MAX = 32_000
 
-function reasoningVariants(provider: SourceProvider, model: SourceModel): NonNullable<Model.Info["variants"]> {
-  const npm = model.provider?.npm ?? provider.npm
+type Variant = NonNullable<Model.Info["variants"]>[number]
+type Overlay = Omit<Variant, "id">
+
+const NATIVE = "@opencode/ai/providers/"
+const OPENAI_FAMILY = [
+  `${NATIVE}openai`,
+  `${NATIVE}azure/responses`,
+  `${NATIVE}amazon-bedrock/mantle/chat`,
+  `${NATIVE}amazon-bedrock/mantle/responses`,
+]
+const CHAT_FAMILY = [
+  `${NATIVE}openai-compatible`,
+  `${NATIVE}xai`,
+  `${NATIVE}mistral`,
+  `${NATIVE}groq`,
+  `${NATIVE}cerebras`,
+  `${NATIVE}deepinfra`,
+  `${NATIVE}togetherai`,
+  Provider.aisdk("venice-ai-sdk-provider"),
+  Provider.aisdk("ai-gateway-provider"),
+]
+// The Vercel gateway runs on the AI SDK and spells upstream options the AI SDK way, so its upstream keys stay legacy.
+const ANTHROPIC_FAMILY = [`${NATIVE}anthropic`, `${NATIVE}google-vertex/messages`, Provider.aisdk("@ai-sdk/anthropic")]
+const GEMINI_FAMILY = [`${NATIVE}google`, `${NATIVE}google-vertex`, Provider.aisdk("@ai-sdk/google")]
+const BEDROCK = `${NATIVE}amazon-bedrock`
+const LEGACY_BEDROCK = Provider.aisdk("@ai-sdk/amazon-bedrock")
+const OPENROUTER = `${NATIVE}openrouter`
+const GATEWAY = Provider.aisdk("@ai-sdk/gateway")
+const SAP = Provider.aisdk("@jerome-benoit/sap-ai-provider-v2")
+const ALIBABA = Provider.aisdk("@ai-sdk/alibaba")
+const COHERE = Provider.aisdk("@ai-sdk/cohere")
+
+function reasoningVariants(pkg: string, model: SourceModel): NonNullable<Model.Info["variants"]> {
   const options = model.reasoning_options
   if (!options?.length) return []
   const toggle = options.some((option) => option.type === "toggle")
   const effort = options.find((option) => option.type === "effort")
   if (effort?.type === "effort") {
-    const off = toggle ? toggleVariants(npm, model.id).filter((variant) => variant.id === "none") : []
+    const off = toggle ? toggleVariants(pkg, model.id).filter((variant) => variant.id === "none") : []
     const variants = [
       ...off,
       ...effort.values.flatMap((value) => {
@@ -202,8 +253,8 @@ function reasoningVariants(provider: SourceProvider, model: SourceModel): NonNul
         const id = typeof raw === "string" && raw !== "null" ? raw : undefined
         if (id === undefined) return []
         if (id === "none" && off.length > 0) return []
-        const settings = settingsForEffort(npm, model.id, id)
-        return settings ? [{ id: Model.VariantID.make(id), settings }] : []
+        const overlay = effortVariant(pkg, model.id, id)
+        return overlay ? [{ id: Model.VariantID.make(id), ...overlay }] : []
       }),
     ]
     return [...new Map(variants.map((variant) => [variant.id, variant])).values()]
@@ -211,80 +262,78 @@ function reasoningVariants(provider: SourceProvider, model: SourceModel): NonNul
   const budget = options.find((option) => option.type === "budget_tokens")
   if (budget?.type === "budget_tokens")
     return [
-      ...(toggle ? toggleVariants(npm, model.id).filter((variant) => variant.id === "none") : []),
-      ...budgetVariants(npm, model, budget),
+      ...(toggle ? toggleVariants(pkg, model.id).filter((variant) => variant.id === "none") : []),
+      ...budgetVariants(pkg, model, budget),
     ]
-  if (toggle) return toggleVariants(npm, model.id)
+  if (toggle) return toggleVariants(pkg, model.id)
   return []
 }
 
-function settingsForEffort(npm: string, modelID: string, effort: string): Provider.Settings | undefined {
-  if (npm === "@openrouter/ai-sdk-provider") return { reasoning: { effort } }
-  if (npm === "@ai-sdk/anthropic" || npm === "@ai-sdk/google-vertex/anthropic") {
-    if (anthropicManualThinking(modelID)) return { effort }
+function effortVariant(pkg: string, modelID: string, effort: string): Overlay | undefined {
+  if (pkg === OPENROUTER) return { settings: { reasoning: { effort } } }
+  if (ANTHROPIC_FAMILY.includes(pkg))
+    return anthropicManualThinking(modelID)
+      ? { settings: { effort } }
+      : { settings: { thinking: { type: "adaptive", display: "summarized" }, effort } }
+  if (GEMINI_FAMILY.includes(pkg))
+    return { settings: { thinkingConfig: { includeThoughts: true, thinkingLevel: effort } } }
+  if (pkg === BEDROCK) return { body: { additionalModelRequestFields: bedrockEffort(modelID, effort) } }
+  if (pkg === LEGACY_BEDROCK)
     return {
-      thinking: { type: "adaptive", display: "summarized" },
-      effort,
+      settings: {
+        reasoningConfig: modelID.includes("anthropic")
+          ? {
+              ...(anthropicManualThinking(modelID) ? {} : { type: "adaptive", display: "summarized" }),
+              maxReasoningEffort: effort,
+            }
+          : { type: "enabled", maxReasoningEffort: effort },
+      },
     }
-  }
-  if (npm === "@ai-sdk/google" || npm === "@ai-sdk/google-vertex")
-    return { thinkingConfig: { includeThoughts: true, thinkingLevel: effort } }
-  if (npm === "@ai-sdk/amazon-bedrock") {
-    if (modelID.includes("anthropic"))
-      return {
-        reasoningConfig: {
-          ...(anthropicManualThinking(modelID) ? {} : { type: "adaptive", display: "summarized" }),
-          maxReasoningEffort: effort,
-        },
-      }
-    return { reasoningConfig: { type: "enabled", maxReasoningEffort: effort } }
-  }
-  if (npm === "@ai-sdk/gateway") {
+  if (pkg === GATEWAY) {
     const upstream = gatewayPackage(modelID)
-    if (upstream) return settingsForEffort(upstream, modelID, effort)
-    return { reasoningEffort: effort }
+    if (upstream) return effortVariant(upstream, modelID, effort)
+    return { settings: { reasoningEffort: effort } }
   }
-  if (npm === "@ai-sdk/github-copilot") {
-    if (modelID.includes("gemini")) return
-    if (modelID.includes("claude")) return { reasoningEffort: effort }
-    return { reasoningEffort: effort, reasoningSummary: "auto", include: OPENAI_INCLUDE_ENCRYPTED_REASONING }
-  }
-  if (npm === "@ai-sdk/openai" || npm === "@ai-sdk/amazon-bedrock/mantle" || npm === "@ai-sdk/azure")
-    return { reasoningEffort: effort, reasoningSummary: "auto", include: OPENAI_INCLUDE_ENCRYPTED_REASONING }
-  if (npm === "@jerome-benoit/sap-ai-provider-v2") {
+  if (OPENAI_FAMILY.includes(pkg))
+    return {
+      settings: { reasoningEffort: effort, reasoningSummary: "auto", include: OPENAI_INCLUDE_ENCRYPTED_REASONING },
+    }
+  if (pkg === SAP) {
     if (modelID.includes("anthropic"))
       return {
-        modelParams: {
-          additionalModelRequestFields: {
-            ...(anthropicManualThinking(modelID) ? {} : { thinking: { type: "adaptive", display: "summarized" } }),
-            output_config: { effort },
+        settings: {
+          modelParams: {
+            additionalModelRequestFields: {
+              ...(anthropicManualThinking(modelID) ? {} : { thinking: { type: "adaptive", display: "summarized" } }),
+              output_config: { effort },
+            },
           },
         },
       }
     if (modelID.includes("gemini"))
-      return { modelParams: { thinkingConfig: { includeThoughts: true, thinkingLevel: effort } } }
+      return { settings: { modelParams: { thinkingConfig: { includeThoughts: true, thinkingLevel: effort } } } }
     if (modelID.includes("amazon--nova"))
-      return { modelParams: { additionalModelRequestFields: { output_config: { effort } } } }
-    return { modelParams: { reasoning_effort: effort } }
+      return { settings: { modelParams: { additionalModelRequestFields: { output_config: { effort } } } } }
+    return { settings: { modelParams: { reasoning_effort: effort } } }
   }
-  if (
-    [
-      "@ai-sdk/openai-compatible",
-      "@ai-sdk/xai",
-      "@ai-sdk/mistral",
-      "@ai-sdk/groq",
-      "@ai-sdk/cerebras",
-      "@ai-sdk/deepinfra",
-      "@ai-sdk/togetherai",
-      "venice-ai-sdk-provider",
-      "ai-gateway-provider",
-    ].includes(npm)
-  )
-    return { reasoningEffort: effort }
+  if (CHAT_FAMILY.includes(pkg)) return { settings: { reasoningEffort: effort } }
+}
+
+// Converse spells reasoning per model family inside `additionalModelRequestFields`.
+function bedrockEffort(modelID: string, effort: string) {
+  if (modelID.includes("anthropic"))
+    return {
+      ...(anthropicManualThinking(modelID) ? {} : { thinking: { type: "adaptive", display: "summarized" } }),
+      output_config: { effort },
+    }
+  // gpt-oss (Harmony) takes the flat chat-completions `reasoning_effort`; GPT-5.6+ take Responses-style `reasoning.effort`.
+  if (modelID.includes("openai.gpt-oss")) return { reasoning_effort: effort }
+  if (modelID.includes("openai.")) return { reasoning: { effort } }
+  return { reasoningConfig: { type: "enabled", maxReasoningEffort: effort } }
 }
 
 function budgetVariants(
-  npm: string,
+  pkg: string,
   model: SourceModel,
   option: Extract<NonNullable<SourceModel["reasoning_options"]>[number], { type: "budget_tokens" }>,
 ): NonNullable<Model.Info["variants"]> {
@@ -295,133 +344,89 @@ function budgetVariants(
     { id: "high", budget: high },
     { id: "max", budget: maximum },
   ].flatMap((item) => {
-    const settings = settingsForBudget(npm, model.id, item.budget)
-    return settings ? [{ id: Model.VariantID.make(item.id), settings }] : []
+    const overlay = budgetVariant(pkg, model.id, item.budget)
+    return overlay ? [{ id: Model.VariantID.make(item.id), ...overlay }] : []
   })
 }
 
-function toggleVariants(npm: string, modelID: string): NonNullable<Model.Info["variants"]> {
-  if (npm === "@ai-sdk/gateway") {
+function toggleVariants(pkg: string, modelID: string): NonNullable<Model.Info["variants"]> {
+  const none = Model.VariantID.make("none")
+  const thinking = Model.VariantID.make("thinking")
+  if (pkg === GATEWAY) {
     const upstream = gatewayPackage(modelID)
     if (upstream) return toggleVariants(upstream, modelID)
     return [
-      {
-        id: Model.VariantID.make("none"),
-        settings: { reasoning: { enabled: false } },
-      },
-      {
-        id: Model.VariantID.make("thinking"),
-        settings: { reasoning: { enabled: true } },
-      },
+      { id: none, settings: { reasoning: { enabled: false } } },
+      { id: thinking, settings: { reasoning: { enabled: true } } },
     ]
   }
-  if (npm === "@openrouter/ai-sdk-provider")
+  if (pkg === OPENROUTER)
     return [
-      { id: Model.VariantID.make("none"), settings: { reasoning: { enabled: false } } },
-      { id: Model.VariantID.make("thinking"), settings: { reasoning: { enabled: true } } },
+      { id: none, settings: { reasoning: { enabled: false } } },
+      { id: thinking, settings: { reasoning: { enabled: true } } },
     ]
-  if (npm === "@ai-sdk/anthropic" || npm === "@ai-sdk/google-vertex/anthropic")
+  if (ANTHROPIC_FAMILY.includes(pkg))
     return [
-      { id: Model.VariantID.make("none"), settings: { thinking: { type: "disabled" } } },
-      {
-        id: Model.VariantID.make("thinking"),
-        settings: {
-          thinking: { type: "adaptive", display: "summarized" },
-        },
-      },
+      { id: none, settings: { thinking: { type: "disabled" } } },
+      { id: thinking, settings: { thinking: { type: "adaptive", display: "summarized" } } },
     ]
-  if (npm === "@ai-sdk/google" || npm === "@ai-sdk/google-vertex")
+  if (GEMINI_FAMILY.includes(pkg))
     return [
-      {
-        id: Model.VariantID.make("none"),
-        settings: { thinkingConfig: { includeThoughts: false, thinkingBudget: 0 } },
-      },
-      {
-        id: Model.VariantID.make("thinking"),
-        settings: { thinkingConfig: { includeThoughts: true, thinkingBudget: -1 } },
-      },
+      { id: none, settings: { thinkingConfig: { includeThoughts: false, thinkingBudget: 0 } } },
+      { id: thinking, settings: { thinkingConfig: { includeThoughts: true, thinkingBudget: -1 } } },
     ]
-  if (npm === "@ai-sdk/amazon-bedrock") {
+  if (pkg === BEDROCK || pkg === LEGACY_BEDROCK) {
     const anthropic = modelID.includes("anthropic")
+    const off = anthropic ? { thinking: { type: "disabled" } } : { reasoningConfig: { type: "disabled" } }
+    const on = anthropic
+      ? { thinking: { type: "adaptive", display: "summarized" } }
+      : { reasoningConfig: { type: "enabled" } }
+    if (pkg === LEGACY_BEDROCK)
+      return [
+        { id: none, settings: { additionalModelRequestFields: off } },
+        { id: thinking, settings: { additionalModelRequestFields: on } },
+      ]
     return [
-      {
-        id: Model.VariantID.make("none"),
-        settings: {
-          additionalModelRequestFields: anthropic
-            ? { thinking: { type: "disabled" } }
-            : { reasoningConfig: { type: "disabled" } },
-        },
-      },
-      {
-        id: Model.VariantID.make("thinking"),
-        settings: {
-          additionalModelRequestFields: anthropic
-            ? { thinking: { type: "adaptive", display: "summarized" } }
-            : { reasoningConfig: { type: "enabled" } },
-        },
-      },
+      { id: none, body: { additionalModelRequestFields: off } },
+      { id: thinking, body: { additionalModelRequestFields: on } },
     ]
   }
-  if (npm === "@ai-sdk/alibaba")
+  if (pkg === ALIBABA)
     return [
-      { id: Model.VariantID.make("none"), settings: { enableThinking: false } },
-      { id: Model.VariantID.make("thinking"), settings: { enableThinking: true } },
+      { id: none, settings: { enableThinking: false } },
+      { id: thinking, settings: { enableThinking: true } },
     ]
-  if (npm === "@ai-sdk/cohere")
+  if (pkg === COHERE)
     return [
-      { id: Model.VariantID.make("none"), settings: { thinking: { type: "disabled" } } },
-      { id: Model.VariantID.make("thinking"), settings: { thinking: { type: "enabled" } } },
+      { id: none, settings: { thinking: { type: "disabled" } } },
+      { id: thinking, settings: { thinking: { type: "enabled" } } },
     ]
-  if (npm === "@jerome-benoit/sap-ai-provider-v2") {
+  if (pkg === SAP) {
     if (modelID.includes("gemini"))
       return [
-        {
-          id: Model.VariantID.make("none"),
-          settings: { modelParams: { thinkingConfig: { includeThoughts: false, thinkingBudget: 0 } } },
-        },
-        {
-          id: Model.VariantID.make("thinking"),
-          settings: { modelParams: { thinkingConfig: { includeThoughts: true, thinkingBudget: -1 } } },
-        },
+        { id: none, settings: { modelParams: { thinkingConfig: { includeThoughts: false, thinkingBudget: 0 } } } },
+        { id: thinking, settings: { modelParams: { thinkingConfig: { includeThoughts: true, thinkingBudget: -1 } } } },
       ]
     if (modelID.includes("cohere"))
       return [
-        {
-          id: Model.VariantID.make("none"),
-          settings: { modelParams: { thinking: { type: "disabled" } } },
-        },
-        {
-          id: Model.VariantID.make("thinking"),
-          settings: { modelParams: { thinking: { type: "enabled" } } },
-        },
+        { id: none, settings: { modelParams: { thinking: { type: "disabled" } } } },
+        { id: thinking, settings: { modelParams: { thinking: { type: "enabled" } } } },
       ]
     if (modelID.includes("amazon--nova"))
       return [
+        { id: none, settings: { modelParams: { additionalModelRequestFields: { thinking: { type: "disabled" } } } } },
         {
-          id: Model.VariantID.make("none"),
-          settings: { modelParams: { additionalModelRequestFields: { thinking: { type: "disabled" } } } },
-        },
-        {
-          id: Model.VariantID.make("thinking"),
+          id: thinking,
           settings: { modelParams: { additionalModelRequestFields: { thinking: { type: "enabled" } } } },
         },
       ]
     if (modelID.includes("anthropic"))
       return [
+        { id: none, settings: { modelParams: { additionalModelRequestFields: { thinking: { type: "disabled" } } } } },
         {
-          id: Model.VariantID.make("none"),
-          settings: {
-            modelParams: { additionalModelRequestFields: { thinking: { type: "disabled" } } },
-          },
-        },
-        {
-          id: Model.VariantID.make("thinking"),
+          id: thinking,
           settings: {
-            modelParams: {
-              additionalModelRequestFields: {
-                thinking: { type: "adaptive", display: "summarized" },
-              },
-            },
+            modelParams: { additionalModelRequestFields: { thinking: { type: "adaptive", display: "summarized" } } },
           },
         },
       ]
@@ -429,40 +434,46 @@ function toggleVariants(npm: string, modelID: string): NonNullable<Model.Info["v
   return []
 }
 
-function settingsForBudget(npm: string, modelID: string, budget: number): Provider.Settings | undefined {
-  if (npm === "@openrouter/ai-sdk-provider") return { reasoning: { max_tokens: budget } }
-  if (npm === "@ai-sdk/anthropic" || npm === "@ai-sdk/google-vertex/anthropic")
-    return { thinking: { type: "enabled", budgetTokens: budget } }
-  if (npm === "@ai-sdk/google" || npm === "@ai-sdk/google-vertex")
-    return { thinkingConfig: { includeThoughts: true, thinkingBudget: budget } }
-  if (npm === "@ai-sdk/amazon-bedrock") return { reasoningConfig: { type: "enabled", budgetTokens: budget } }
-  if (npm === "@ai-sdk/gateway") {
+function budgetVariant(pkg: string, modelID: string, budget: number): Overlay | undefined {
+  if (pkg === OPENROUTER) return { settings: { reasoning: { max_tokens: budget } } }
+  if (ANTHROPIC_FAMILY.includes(pkg)) return { settings: { thinking: { type: "enabled", budgetTokens: budget } } }
+  if (GEMINI_FAMILY.includes(pkg))
+    return { settings: { thinkingConfig: { includeThoughts: true, thinkingBudget: budget } } }
+  if (pkg === BEDROCK) return { body: { additionalModelRequestFields: bedrockBudget(modelID, budget) } }
+  if (pkg === LEGACY_BEDROCK) return { settings: { reasoningConfig: { type: "enabled", budgetTokens: budget } } }
+  if (pkg === GATEWAY) {
     const upstream = gatewayPackage(modelID)
-    return upstream ? settingsForBudget(upstream, modelID, budget) : { reasoning: { max_tokens: budget } }
+    return upstream ? budgetVariant(upstream, modelID, budget) : { settings: { reasoning: { max_tokens: budget } } }
   }
-  if (npm === "@ai-sdk/cohere") return { thinking: { type: "enabled", tokenBudget: budget } }
-  if (npm === "@ai-sdk/alibaba") return { enableThinking: true, thinkingBudget: budget }
-  if (npm === "@jerome-benoit/sap-ai-provider-v2") {
+  if (pkg === COHERE) return { settings: { thinking: { type: "enabled", tokenBudget: budget } } }
+  if (pkg === ALIBABA) return { settings: { enableThinking: true, thinkingBudget: budget } }
+  if (pkg === SAP) {
     if (modelID.includes("anthropic"))
       return {
-        modelParams: {
-          additionalModelRequestFields: { thinking: { type: "enabled", budget_tokens: budget } },
+        settings: {
+          modelParams: { additionalModelRequestFields: { thinking: { type: "enabled", budget_tokens: budget } } },
         },
       }
     if (modelID.includes("gemini"))
-      return { modelParams: { thinkingConfig: { includeThoughts: true, thinkingBudget: budget } } }
-    if (modelID.includes("cohere")) return { modelParams: { thinking: { type: "enabled", token_budget: budget } } }
+      return { settings: { modelParams: { thinkingConfig: { includeThoughts: true, thinkingBudget: budget } } } }
+    if (modelID.includes("cohere"))
+      return { settings: { modelParams: { thinking: { type: "enabled", token_budget: budget } } } }
   }
 }
 
+function bedrockBudget(modelID: string, budget: number) {
+  if (modelID.includes("anthropic")) return { thinking: { type: "enabled", budget_tokens: budget } }
+  return { reasoningConfig: { type: "enabled", budgetTokens: budget } }
+}
+
 function gatewayPackage(modelID: string) {
   const separator = modelID.indexOf("/")
   if (separator <= 0) return
   const prefix = modelID.slice(0, separator)
-  if (prefix === "anthropic") return "@ai-sdk/anthropic"
-  if (prefix === "google") return "@ai-sdk/google"
-  if (prefix === "amazon") return "@ai-sdk/amazon-bedrock"
-  if (prefix === "alibaba") return "@ai-sdk/alibaba"
+  if (prefix === "anthropic") return Provider.aisdk("@ai-sdk/anthropic")
+  if (prefix === "google") return Provider.aisdk("@ai-sdk/google")
+  if (prefix === "amazon") return LEGACY_BEDROCK
+  if (prefix === "alibaba") return ALIBABA
 }
 
 function anthropicManualThinking(modelID: string) {
@@ -483,12 +494,12 @@ function modelInfo(
   providerID: Provider.ID,
   id: Model.ID,
   model: SourceModel,
-  input: {
+  input: AISDKNative.Overlay & {
     readonly name?: string
+    readonly package?: string
     readonly cost?: Model.Info["cost"]
-    readonly request?: NonNullable<NonNullable<SourceModel["experimental"]>["modes"]>[string]["provider"]
     readonly variants?: NonNullable<Model.Info["variants"]>
-  } = {},
+  },
 ): Model.Info {
   return {
     id,
@@ -497,8 +508,8 @@ function modelInfo(
     name: input.name ?? model.name,
     compatibility: Model.compatibility(model.interleaved),
     family: model.family ? Model.Family.make(model.family) : undefined,
-    package: model.provider?.npm ? Provider.aisdk(model.provider.npm) : undefined,
-    settings: model.provider?.api ? { baseURL: model.provider.api } : undefined,
+    package: input.package,
+    settings: input.settings,
     capabilities: {
       tools: model.tool_call,
       input: [...(model.modalities?.input ?? [])],
@@ -514,8 +525,8 @@ function modelInfo(
     status: model.status ?? "active",
     enabled: true,
     limit: { context: model.limit.context, input: model.limit.input, output: model.limit.output },
-    headers: input.request?.headers ? { ...input.request.headers } : undefined,
-    body: input.request?.body ? { ...input.request.body } : undefined,
+    headers: input.headers,
+    body: input.body,
   }
 }
 
diff --git a/packages/core/src/plugin/aisdk-native.ts b/packages/core/src/plugin/aisdk-native.ts
new file mode 100644
index 000000000000..1d5d83e5b7b4
--- /dev/null
+++ b/packages/core/src/plugin/aisdk-native.ts
@@ -0,0 +1,15 @@
+export * as AISDKNativePlugin from "./aisdk-native.js"
+
+import { Effect } from "effect"
+import { define } from "@opencode/plugin/effect/plugin"
+import { AISDKNative } from "../aisdk-native.js"
+
+/** Legacy `aisdk:` packages written by config or plugins become their native replacements before anything reads them. */
+export const Plugin = define({
+  id: "opencode.aisdk-native",
+  effect: Effect.fn(function* (ctx) {
+    yield* ctx.catalog.transform((catalog) => {
+      for (const record of catalog.provider.list()) AISDKNative.rewrite(record.provider, record.models.values())
+    })
+  }),
+})
diff --git a/packages/core/src/plugin/internal.ts b/packages/core/src/plugin/internal.ts
index 1691a3c7bbe8..27817f414715 100644
--- a/packages/core/src/plugin/internal.ts
+++ b/packages/core/src/plugin/internal.ts
@@ -82,6 +82,7 @@ import { AgentPlugin } from "./agent.js"
 import BrowserPlugin from "@opencode/plugin-browser"
 import { CommandPlugin } from "./command.js"
 import { PlanPlugin } from "./plan.js"
+import { AISDKNativePlugin } from "./aisdk-native.js"
 import { ModelsDevPlugin } from "./models-dev.js"
 import { McpCodeModeExclusionPlugin } from "./mcp-codemode-exclusion.js"
 import { ProviderPlugins } from "./provider.js"
@@ -240,6 +241,7 @@ const post = [
   ConfigProviderPlugin.Plugin,
   ConfigWebSearchPlugin.Plugin,
   ConfigWorktreePlugin.Plugin,
+  AISDKNativePlugin.Plugin,
   VariantPlugin.Plugin,
   ConfigPolicyPlugin.Plugin,
 ] as const satisfies readonly InternalPlugin[]
diff --git a/packages/core/src/plugin/provider/amazon-bedrock.ts b/packages/core/src/plugin/provider/amazon-bedrock.ts
index d15ffd4b4997..bdf98cc5fca0 100644
--- a/packages/core/src/plugin/provider/amazon-bedrock.ts
+++ b/packages/core/src/plugin/provider/amazon-bedrock.ts
@@ -13,10 +13,8 @@ const CHAIN_ENV = [
   "AWS_CONTAINER_CREDENTIALS_FULL_URI",
 ]
 
-const isBedrock = (item: { readonly package: string }) => {
-  const name = Provider.packageName(item.package)
-  return name.startsWith("@ai-sdk/amazon-bedrock") || name.startsWith("@opencode/ai/providers/amazon-bedrock")
-}
+const isBedrock = (item: { readonly package: string }) =>
+  Provider.packageName(item.package).startsWith("@opencode/ai/providers/amazon-bedrock")
 
 export const AmazonBedrockPlugin = define({
   id: "opencode.provider.amazon.bedrock",
diff --git a/packages/core/src/plugin/provider/azure.ts b/packages/core/src/plugin/provider/azure.ts
index 5064130ef661..4cdf794bcd47 100644
--- a/packages/core/src/plugin/provider/azure.ts
+++ b/packages/core/src/plugin/provider/azure.ts
@@ -134,7 +134,10 @@ export const AzurePlugin = define({
     yield* load()
     yield* ctx.catalog.transform((evt) => {
       for (const item of evt.provider.list()) {
-        if (item.provider.id !== Provider.ID.azure && Provider.packageName(item.provider.package) !== "@ai-sdk/azure")
+        if (
+          item.provider.id !== Provider.ID.azure &&
+          !Provider.packageName(item.provider.package)?.startsWith("@opencode/ai/providers/azure")
+        )
           continue
         const resourceName = resolveResourceName(item.provider.settings, loaded.resource)
         if (resourceName)
@@ -209,9 +212,9 @@ function expandResourceName(baseURL: string, resourceName: string) {
 }
 
 function responsesWebSocketCapable(provider: Provider.Info, model: Model.Info) {
-  if (Provider.packageName(model.package ?? provider.package) !== "@ai-sdk/azure") return false
+  if (Provider.packageName(model.package ?? provider.package) !== "@opencode/ai/providers/azure/responses") return false
   const settings = Provider.mergeOverlay(provider.settings, model.settings)
-  if (settings?.useCompletionUrls === true || settings?.useDeploymentBasedUrls === true) return false
+  if (settings?.useDeploymentBasedUrls === true) return false
   if (settings?.apiVersion !== undefined && settings.apiVersion !== "v1") return false
   if (typeof settings?.baseURL !== "string") return true
   return /^https:\/\/[^/]+\.openai\.azure\.com(?:\/|$)/i.test(settings.baseURL)
diff --git a/packages/core/src/plugin/provider/cerebras.ts b/packages/core/src/plugin/provider/cerebras.ts
index 3baf20f1977b..1237fdcf3108 100644
--- a/packages/core/src/plugin/provider/cerebras.ts
+++ b/packages/core/src/plugin/provider/cerebras.ts
@@ -7,8 +7,7 @@ export const CerebrasPlugin = define({
   effect: Effect.fn(function* (ctx) {
     yield* ctx.catalog.transform((evt) => {
       for (const item of evt.provider.list()) {
-        const name = Provider.packageName(item.provider.package)
-        if (name !== "@ai-sdk/cerebras" && name !== "@opencode/ai/providers/cerebras") continue
+        if (Provider.packageName(item.provider.package) !== "@opencode/ai/providers/cerebras") continue
         evt.provider.update(item.provider.id, (provider) => {
           provider.headers = { ...provider.headers, "X-Cerebras-3rd-Party-Integration": "opencode" }
         })
diff --git a/packages/core/src/plugin/provider/google-vertex.ts b/packages/core/src/plugin/provider/google-vertex.ts
index 84c783d6f7f9..f11ad5c635d2 100644
--- a/packages/core/src/plugin/provider/google-vertex.ts
+++ b/packages/core/src/plugin/provider/google-vertex.ts
@@ -59,13 +59,10 @@ export const GoogleVertexPlugin = define({
   effect: Effect.fn(function* (ctx) {
     yield* ctx.catalog.transform((evt) => {
       for (const item of evt.provider.list()) {
-        if (!Provider.isAISDK(item.provider.package)) continue
+        const packageName = Provider.packageName(item.provider.package)
         if (
-          Provider.packageName(item.provider.package) !== "@ai-sdk/google-vertex" &&
-          !(
-            item.provider.id === Provider.ID.googleVertex &&
-            Provider.packageName(item.provider.package)?.includes("@ai-sdk/openai-compatible")
-          )
+          packageName !== "@opencode/ai/providers/google-vertex" &&
+          !(item.provider.id === Provider.ID.googleVertex && packageName === "@opencode/ai/providers/openai-compatible")
         )
           continue
         const project = resolveProject(item.provider.settings ?? {})
diff --git a/packages/core/src/plugin/provider/kilo.ts b/packages/core/src/plugin/provider/kilo.ts
index 17e46d168e37..2561f3665d26 100644
--- a/packages/core/src/plugin/provider/kilo.ts
+++ b/packages/core/src/plugin/provider/kilo.ts
@@ -7,8 +7,7 @@ export const KiloPlugin = define({
   effect: Effect.fn(function* (ctx) {
     yield* ctx.catalog.transform((evt) => {
       for (const item of evt.provider.list()) {
-        if (!Provider.isAISDK(item.provider.package)) continue
-        if (Provider.packageName(item.provider.package) !== "@ai-sdk/openai-compatible") continue
+        if (Provider.packageName(item.provider.package) !== "@opencode/ai/providers/openai-compatible") continue
         if (item.provider.settings?.baseURL !== "https://api.kilo.ai/api/gateway") continue
         evt.provider.update(item.provider.id, (provider) => {
           provider.headers = { ...provider.headers, "HTTP-Referer": "https://opencode.ai/", "X-Title": "opencode" }
diff --git a/packages/core/src/plugin/provider/llmgateway.ts b/packages/core/src/plugin/provider/llmgateway.ts
index c720455cc654..78edeb4aea13 100644
--- a/packages/core/src/plugin/provider/llmgateway.ts
+++ b/packages/core/src/plugin/provider/llmgateway.ts
@@ -11,8 +11,7 @@ export const LLMGatewayPlugin = define({
     yield* ctx.catalog.transform((evt) => {
       for (const item of evt.provider.list()) {
         if (item.provider.activation === "disabled") continue
-        if (!Provider.isAISDK(item.provider.package)) continue
-        if (Provider.packageName(item.provider.package) !== "@ai-sdk/openai-compatible") continue
+        if (Provider.packageName(item.provider.package) !== "@opencode/ai/providers/openai-compatible") continue
         if (item.provider.settings?.baseURL !== "https://api.llmgateway.io/v1") continue
         if (!configured.has(Integration.ID.make(item.provider.id))) continue
         evt.provider.update(item.provider.id, (provider) => {
diff --git a/packages/core/src/plugin/provider/nvidia.ts b/packages/core/src/plugin/provider/nvidia.ts
index e8266ffdfd01..2194d4fd538d 100644
--- a/packages/core/src/plugin/provider/nvidia.ts
+++ b/packages/core/src/plugin/provider/nvidia.ts
@@ -7,8 +7,7 @@ export const NvidiaPlugin = define({
   effect: Effect.fn(function* (ctx) {
     yield* ctx.catalog.transform((evt) => {
       for (const item of evt.provider.list()) {
-        if (!Provider.isAISDK(item.provider.package)) continue
-        if (Provider.packageName(item.provider.package) !== "@ai-sdk/openai-compatible") continue
+        if (Provider.packageName(item.provider.package) !== "@opencode/ai/providers/openai-compatible") continue
         if (item.provider.settings?.baseURL !== "https://integrate.api.nvidia.com/v1") continue
         evt.provider.update(item.provider.id, (provider) => {
           provider.headers = {
diff --git a/packages/core/src/plugin/provider/openrouter.ts b/packages/core/src/plugin/provider/openrouter.ts
index eb392171d3e8..7e3fc1b900ad 100644
--- a/packages/core/src/plugin/provider/openrouter.ts
+++ b/packages/core/src/plugin/provider/openrouter.ts
@@ -8,8 +8,7 @@ export const OpenRouterPlugin = define({
   effect: Effect.fn(function* (ctx) {
     yield* ctx.catalog.transform((evt) => {
       for (const item of evt.provider.list()) {
-        if (!Provider.isAISDK(item.provider.package)) continue
-        if (Provider.packageName(item.provider.package) !== "@openrouter/ai-sdk-provider") continue
+        if (Provider.packageName(item.provider.package) !== "@opencode/ai/providers/openrouter") continue
         evt.provider.update(item.provider.id, (provider) => {
           provider.headers = { ...provider.headers, "HTTP-Referer": "https://opencode.ai/", "X-Title": "opencode" }
         })
diff --git a/packages/core/src/plugin/provider/zenmux.ts b/packages/core/src/plugin/provider/zenmux.ts
index 8b90bde2b377..2159fbd66b6f 100644
--- a/packages/core/src/plugin/provider/zenmux.ts
+++ b/packages/core/src/plugin/provider/zenmux.ts
@@ -7,8 +7,7 @@ export const ZenmuxPlugin = define({
   effect: Effect.fn(function* (ctx) {
     yield* ctx.catalog.transform((evt) => {
       for (const item of evt.provider.list()) {
-        if (!Provider.isAISDK(item.provider.package)) continue
-        if (Provider.packageName(item.provider.package) !== "@ai-sdk/openai-compatible") continue
+        if (Provider.packageName(item.provider.package) !== "@opencode/ai/providers/openai-compatible") continue
         if (item.provider.settings?.baseURL !== "https://zenmux.ai/api/v1") continue
         evt.provider.update(item.provider.id, (provider) => {
           provider.headers = {
diff --git a/packages/core/src/plugin/variant.ts b/packages/core/src/plugin/variant.ts
index 0931e68c07c5..1a79ebe05229 100644
--- a/packages/core/src/plugin/variant.ts
+++ b/packages/core/src/plugin/variant.ts
@@ -33,8 +33,7 @@ export function generate(
   model: { readonly id: string; readonly modelID?: string; readonly package?: string },
   provider?: { readonly package: string },
 ): NonNullable<Model.Info["variants"]> {
-  const packageName = model.package ?? provider?.package
-  if (!Provider.isAISDK(packageName) || Provider.packageName(packageName) !== "@ai-sdk/openai-compatible") return []
+  if (Provider.packageName(model.package ?? provider?.package) !== "@opencode/ai/providers/openai-compatible") return []
   const ids = `${model.id} ${model.modelID ?? ""}`.toLowerCase()
   if (!["glm-5.2", "glm-5-2", "glm-5p2"].some((name) => ids.includes(name))) return []
   return ["high", "max"].map((id) => ({
diff --git a/packages/core/src/v1/config/migrate.ts b/packages/core/src/v1/config/migrate.ts
index ccc70d878207..6bc90cfb96a4 100644
--- a/packages/core/src/v1/config/migrate.ts
+++ b/packages/core/src/v1/config/migrate.ts
@@ -9,6 +9,7 @@ import { ConfigCommandV1 } from "./command.js"
 import { ConfigMCPV1 } from "./mcp.js"
 import { ConfigPermissionV1 } from "./permission.js"
 import { ConfigProviderV1 } from "./provider.js"
+import { AISDKNative } from "../../aisdk-native.js"
 import { ConfigProviderOptionsV1 } from "./provider-options.js"
 import { Provider } from "../../provider.js"
 import { Model } from "../../model.js"
@@ -239,9 +240,19 @@ function providers(info?: Readonly<Record<string, ConfigProviderV1.Info>>) {
 }
 
 export function migrateProvider(sourceID: string, info: ConfigProviderV1.Info) {
-  if (sourceID === "azure-cognitive-services") return migrateAzureCognitiveServicesProvider(info)
-  if (sourceID === "google-vertex-anthropic") return migrateGoogleVertexAnthropicProvider(info)
-  return migrateStandardProvider(info)
+  const migrated =
+    sourceID === "azure-cognitive-services"
+      ? migrateAzureCognitiveServicesProvider(info)
+      : sourceID === "google-vertex-anthropic"
+        ? migrateGoogleVertexAnthropicProvider(info)
+        : migrateStandardProvider(info)
+  // V1 only knew AI SDK packages; the migrated document names the native replacements directly.
+  const models = Object.entries(migrated.models ?? {}).map(([id, model]) => ({ id, ...model }))
+  AISDKNative.rewrite(migrated, models)
+  return {
+    ...migrated,
+    models: migrated.models && Object.fromEntries(models.map(({ id, ...model }) => [id, model])),
+  }
 }
 
 function migrateStandardProvider(info: ConfigProviderV1.Info) {
diff --git a/packages/core/test/aisdk-native.test.ts b/packages/core/test/aisdk-native.test.ts
index 11c657a3396d..f4464250ee6b 100644
--- a/packages/core/test/aisdk-native.test.ts
+++ b/packages/core/test/aisdk-native.test.ts
@@ -1,10 +1,76 @@
 import { describe, expect, test } from "bun:test"
 import { AISDKNative } from "@opencode/core/aisdk-native"
+import { Provider } from "@opencode/core/provider"
 
-const map = (packageName: string, settings: Readonly<Record<string, unknown>>, modelID = "test-model") =>
-  AISDKNative.map({ packageName, settings, modelID, providerID: "test-provider" })
+// A model that names a legacy package, rewritten the way the catalog does it.
+const map = (packageName: string, settings: Readonly<Record<string, unknown>>, modelID = "test-model") => {
+  const model: AISDKNative.ModelTarget = { id: modelID, package: Provider.aisdk(packageName), settings }
+  AISDKNative.rewrite({}, [model])
+  const { id: _, ...rest } = model
+  return rest as Partial<AISDKNative.Target>
+}
 
 describe("AISDKNative", () => {
+  test("rewrites a provider and its models in place", () => {
+    const provider: AISDKNative.Target = {
+      package: Provider.aisdk("@ai-sdk/amazon-bedrock/mantle"),
+      settings: { region: "us-east-1", bearerToken: "token" },
+    }
+    const chat: AISDKNative.ModelTarget = {
+      id: "openai.gpt-oss-120b",
+      variants: [{ id: "high", settings: { reasoningEffort: "high" } }],
+    }
+    const responses: AISDKNative.ModelTarget = { id: "openai.gpt-5.5" }
+    const explicit: AISDKNative.ModelTarget = {
+      id: "claude",
+      package: Provider.aisdk("@ai-sdk/anthropic"),
+      settings: { effort: "high" },
+    }
+    const opaque: AISDKNative.ModelTarget = {
+      id: "sonar",
+      package: Provider.aisdk("@ai-sdk/perplexity"),
+      settings: { extraBody: {} },
+    }
+    AISDKNative.rewrite(provider, [chat, responses, explicit, opaque])
+    expect(provider).toEqual({
+      package: "@opencode/ai/providers/amazon-bedrock/mantle/responses",
+      settings: { region: "us-east-1", apiKey: "token" },
+    })
+    // Only models whose native package differs from the provider's name one.
+    expect(chat).toEqual({
+      id: "openai.gpt-oss-120b",
+      package: "@opencode/ai/providers/amazon-bedrock/mantle/chat",
+      variants: [{ id: "high", settings: { reasoningEffort: "high" } }],
+    })
+    expect(responses).toEqual({ id: "openai.gpt-5.5" })
+    expect(explicit).toEqual({
+      id: "claude",
+      package: "@opencode/ai/providers/anthropic",
+      settings: { effort: "high" },
+    })
+    expect(opaque).toEqual({ id: "sonar", package: Provider.aisdk("@ai-sdk/perplexity"), settings: { extraBody: {} } })
+  })
+
+  test("moves provider-level Converse request settings onto each model", () => {
+    const provider: AISDKNative.Target = {
+      package: Provider.aisdk("@ai-sdk/amazon-bedrock"),
+      settings: { region: "us-east-1", reasoningConfig: { maxReasoningEffort: "high" } },
+    }
+    const claude: AISDKNative.ModelTarget = { id: "anthropic.claude-sonnet-4-6" }
+    const nova: AISDKNative.ModelTarget = {
+      id: "amazon.nova-2-lite-v1:0",
+      variants: [{ id: "none", settings: { additionalModelRequestFields: { reasoningConfig: { type: "disabled" } } } }],
+    }
+    AISDKNative.rewrite(provider, [claude, nova])
+    expect(provider).toEqual({ package: "@opencode/ai/providers/amazon-bedrock", settings: { region: "us-east-1" } })
+    expect(claude.body).toEqual({ additionalModelRequestFields: { output_config: { effort: "high" } } })
+    expect(nova).toEqual({
+      id: "amazon.nova-2-lite-v1:0",
+      body: { additionalModelRequestFields: { reasoningConfig: { maxReasoningEffort: "high" } } },
+      variants: [{ id: "none", body: { additionalModelRequestFields: { reasoningConfig: { type: "disabled" } } } }],
+    })
+  })
+
   test("maps OpenAI-family packages and request options to native providers", () => {
     expect(
       map("@ai-sdk/openai", {
@@ -30,11 +96,7 @@ describe("AISDKNative", () => {
     })
     expect(map("@ai-sdk/openai-compatible", { baseURL: "https://example.com/v1", reasoningEffort: "high" })).toEqual({
       package: "@opencode/ai/providers/openai-compatible",
-      settings: {
-        baseURL: "https://example.com/v1",
-        provider: "test-provider",
-        reasoningEffort: "high",
-      },
+      settings: { baseURL: "https://example.com/v1", reasoningEffort: "high" },
     })
   })
 
@@ -77,10 +139,7 @@ describe("AISDKNative", () => {
         },
         headers: { "x-provider": name },
       })
-      expect(map(`@ai-sdk/${name}`, {})).toEqual({
-        package: `@opencode/ai/providers/${name}`,
-        settings: {},
-      })
+      expect(map(`@ai-sdk/${name}`, {})).toEqual({ package: `@opencode/ai/providers/${name}` })
     }
   })
 
@@ -323,7 +382,6 @@ describe("AISDKNative", () => {
     })
     expect(map("@ai-sdk/amazon-bedrock", { auth: "bogus" }, "anthropic.claude")).toEqual({
       package: "@opencode/ai/providers/amazon-bedrock",
-      settings: {},
     })
   })
 
diff --git a/packages/core/test/config/config.test.ts b/packages/core/test/config/config.test.ts
index b593c19dd6c7..680894f1f23a 100644
--- a/packages/core/test/config/config.test.ts
+++ b/packages/core/test/config/config.test.ts
@@ -712,8 +712,8 @@ describe("Config", () => {
     })
 
     expect(migrated.providers?.bedrock).toMatchObject({
-      package: Provider.aisdk("@ai-sdk/amazon-bedrock"),
-      models: { claude: { package: Provider.aisdk("@ai-sdk/anthropic") } },
+      package: "@opencode/ai/providers/amazon-bedrock",
+      models: { claude: { package: "@opencode/ai/providers/anthropic" } },
       settings: { region: "us-east-1", profile: "dev" },
       headers: { "x-test": "1" },
       body: { trace: true },
@@ -755,14 +755,14 @@ describe("Config", () => {
     ])
     expect(migrated.providers?.azure).toMatchObject({
       env: ["AZURE_COGNITIVE_SERVICES_API_KEY"],
-      package: Provider.aisdk("@ai-sdk/azure"),
+      package: "@opencode/ai/providers/azure/responses",
       models: { deployment: {} },
     })
     expect(migrated.providers?.["azure-cognitive-services"]).toBeUndefined()
     expect(migrated.providers?.["google-vertex"]).toMatchObject({
       settings: { project: "test-project", location: "us-central1" },
       models: {
-        "claude-sonnet": { package: Provider.aisdk("@ai-sdk/google-vertex/anthropic") },
+        "claude-sonnet": { package: "@opencode/ai/providers/google-vertex/messages" },
       },
     })
     expect(migrated.providers?.["google-vertex"]).not.toHaveProperty("package")
@@ -781,7 +781,7 @@ describe("Config", () => {
 
     expect(migrated.providers?.azure).toMatchObject({
       env: ["AZURE_COGNITIVE_SERVICES_API_KEY"],
-      package: Provider.aisdk("@ai-sdk/openai-compatible"),
+      package: "@opencode/ai/providers/openai-compatible",
       settings: {
         baseURL: "https://${AZURE_COGNITIVE_SERVICES_RESOURCE_NAME}.cognitiveservices.azure.com/openai",
       },
@@ -813,7 +813,7 @@ describe("Config", () => {
 
     expect(migrated.providers?.["google-vertex"]?.package).toBeUndefined()
     expect(migrated.providers?.["google-vertex"]?.models?.claude?.package).toBe(
-      Provider.aisdk("@ai-sdk/google-vertex/anthropic"),
+      "@opencode/ai/providers/google-vertex/messages",
     )
   })
 
@@ -1445,7 +1445,7 @@ describe("Config", () => {
               },
             })
             expect(documents[0]?.info.providers?.openai).toMatchObject({
-              package: Provider.aisdk("@ai-sdk/openai"),
+              package: "@opencode/ai/providers/openai",
               settings: { apiKey: "secret", organization: "org" },
               models: {
                 model: {
@@ -1455,7 +1455,7 @@ describe("Config", () => {
               },
             })
             expect(documents[0]?.info.providers?.anthropic).toMatchObject({
-              package: Provider.aisdk("@ai-sdk/anthropic"),
+              package: "@opencode/ai/providers/anthropic",
               models: {
                 model: {
                   settings: {
diff --git a/packages/core/test/config/provider.test.ts b/packages/core/test/config/provider.test.ts
index 08bfd9da7388..0847fa2372ad 100644
--- a/packages/core/test/config/provider.test.ts
+++ b/packages/core/test/config/provider.test.ts
@@ -116,7 +116,7 @@ describe("ConfigProviderPlugin.Plugin", () => {
           info: decode({
             providers: {
               litellm: {
-                package: "aisdk:@ai-sdk/openai-compatible",
+                package: "@opencode/ai/providers/openai-compatible",
                 models: { chat: {} },
               },
             },
@@ -145,7 +145,7 @@ describe("ConfigProviderPlugin.Plugin", () => {
           info: decode({
             providers: {
               custom: {
-                package: "aisdk:@ai-sdk/openai-compatible",
+                package: "@opencode/ai/providers/openai-compatible",
                 models: { chat: {} },
               },
             },
@@ -181,7 +181,7 @@ describe("ConfigProviderPlugin.Plugin", () => {
           info: decode({
             providers: {
               custom: {
-                package: "aisdk:@ai-sdk/openai-compatible",
+                package: "@opencode/ai/providers/openai-compatible",
                 models: {
                   inherited: { name: "Inherited" },
                   overridden: {
@@ -273,7 +273,7 @@ describe("ConfigProviderPlugin.Plugin", () => {
         models: { chat: {} },
       },
       native: {
-        package: "aisdk:@ai-sdk/openai",
+        package: "@opencode/ai/providers/openai",
         settings: { baseURL: "https://proxy.example/v1" },
         headers: { "x-provider": "default" },
         body: { store: false },
@@ -298,13 +298,13 @@ describe("ConfigProviderPlugin.Plugin", () => {
         },
       },
       native: {
-        package: "aisdk:@ai-sdk/openai",
+        package: "@opencode/ai/providers/openai",
         settings: { baseURL: "https://proxy.example/v1" },
         models: {
           chat: {
             modelID: "vendor/chat",
             name: "Custom chat",
-            package: "aisdk:@ai-sdk/anthropic",
+            package: "@opencode/ai/providers/anthropic",
             settings: { baseURL: "https://model.example/v1", temperature: 0.2 },
             limit: { context: 100000, input: 80000, output: 16000 },
             cost: { input: 1, output: 2, cache: { read: 0.1, write: 0.2 } },
@@ -350,7 +350,7 @@ describe("ConfigProviderPlugin.Plugin", () => {
       const modelID = Model.ID.make("chat")
       yield* catalog.transform((editor) => {
         editor.model.update(providerID, modelID, (model) => {
-          model.package = "aisdk:@ai-sdk/anthropic"
+          model.package = "@opencode/ai/providers/anthropic"
           model.settings = { baseURL: "https://catalog.example/v1" }
           model.capabilities = { tools: false, input: ["audio"], output: ["audio"] }
           model.limit = { context: 100000, input: 80000, output: 16000 }
@@ -384,7 +384,7 @@ describe("ConfigProviderPlugin.Plugin", () => {
           info: decode({
             providers: {
               opencode: {
-                package: "aisdk:@ai-sdk/openai",
+                package: "@opencode/ai/providers/openai",
                 settings: { baseURL: "https://opencode.test/v1" },
                 models: {
                   "alpha-gpt-next": {
@@ -433,7 +433,7 @@ describe("ConfigProviderPlugin.Plugin", () => {
           info: decode({
             providers: {
               opencode: {
-                package: "aisdk:@ai-sdk/openai",
+                package: "@opencode/ai/providers/openai",
                 settings: { baseURL: "https://opencode.test/v1" },
               },
             },
@@ -557,7 +557,7 @@ describe("ConfigProviderPlugin.Plugin", () => {
 
         yield* catalog.transform((editor) => {
           editor.provider.update(Provider.ID.anthropic, (provider) => {
-            provider.package = "aisdk:@ai-sdk/anthropic"
+            provider.package = "@opencode/ai/providers/anthropic"
           })
           editor.model.update(Provider.ID.anthropic, modelID, (model) => {
             model.variants = [{ id: Model.VariantID.make("fast"), settings: { effort: "high" } }]
diff --git a/packages/core/test/github-copilot/models.test.ts b/packages/core/test/github-copilot/models.test.ts
index b08a4f6e194c..d07254d01b3d 100644
--- a/packages/core/test/github-copilot/models.test.ts
+++ b/packages/core/test/github-copilot/models.test.ts
@@ -105,7 +105,7 @@ test("defensively syncs advertised Copilot models", async () => {
       Model.VariantID.make("high"),
     ])
     expect(model?.capabilities.input).toEqual(["text", "image", "pdf"])
-    expect(models.get(Model.ID.make("claude-sonnet"))?.package).toBe(Provider.aisdk("@ai-sdk/anthropic"))
+    expect(models.get(Model.ID.make("claude-sonnet"))?.package).toBe("@opencode/ai/providers/anthropic")
     expect(models.get(Model.ID.make("claude-sonnet"))?.settings).toMatchObject({
       baseURL: `${server.url.origin}/v1`,
       endpoint: "messages",
@@ -148,8 +148,16 @@ test("prices cache reads from either token price spelling", async () => {
 
   try {
     const models = await CopilotModels.get(server.url.origin, {}, [])
-    expect(models.get(Model.ID.make("renamed"))?.cost[0]).toMatchObject({ input: 2.5, output: 15, cache: { read: 0.25 } })
-    expect(models.get(Model.ID.make("legacy"))?.cost[0]).toMatchObject({ input: 2.5, output: 15, cache: { read: 0.25 } })
+    expect(models.get(Model.ID.make("renamed"))?.cost[0]).toMatchObject({
+      input: 2.5,
+      output: 15,
+      cache: { read: 0.25 },
+    })
+    expect(models.get(Model.ID.make("legacy"))?.cost[0]).toMatchObject({
+      input: 2.5,
+      output: 15,
+      cache: { read: 0.25 },
+    })
     expect(models.get(Model.ID.make("unpriced"))?.cost[0]).toMatchObject({ cache: { read: 0 } })
   } finally {
     await server.stop(true)
diff --git a/packages/core/test/location-layer.test.ts b/packages/core/test/location-layer.test.ts
index 8c9f28cf984f..6591a21f9f27 100644
--- a/packages/core/test/location-layer.test.ts
+++ b/packages/core/test/location-layer.test.ts
@@ -657,7 +657,7 @@ describe("LocationServiceMap", () => {
             const catalog = yield* Catalog.Service
             yield* catalog.transform((editor) => {
               editor.provider.update(Provider.ID.make("aliased"), (provider) => {
-                provider.package = Provider.aisdk("@ai-sdk/openai")
+                provider.package = "@opencode/ai/providers/openai"
               })
               editor.model.update(Provider.ID.make("aliased"), Model.ID.make("fast"), (model) => {
                 // Catalog id and package model id intentionally differ, like gpt-5.5-fast -> gpt-5.5.
diff --git a/packages/core/test/modal/models.test.ts b/packages/core/test/modal/models.test.ts
index fb12f0446cbe..07518f370c96 100644
--- a/packages/core/test/modal/models.test.ts
+++ b/packages/core/test/modal/models.test.ts
@@ -65,7 +65,7 @@ test("maps live Modal models onto catalog templates", async () => {
     expect(model?.family).toBe(Model.Family.make("catalog-family"))
     expect(model?.providerID).toBe(providerID)
     expect(model?.modelID).toBe(Model.ID.make("live-model"))
-    expect(model?.package).toBe(Provider.aisdk("@ai-sdk/openai-compatible"))
+    expect(model?.package).toBe("@opencode/ai/providers/openai-compatible")
     expect(model?.settings).toMatchObject({ baseURL: `${server.url.origin}/v1` })
     expect(model?.compatibility).toMatchObject({ reasoningField: "reasoning_content" })
     expect(model?.capabilities).toMatchObject({ tools: true, input: ["text", "image"], output: ["text"] })
diff --git a/packages/core/test/model-resolver.test.ts b/packages/core/test/model-resolver.test.ts
index c8e2ccadbee3..832c0098916a 100644
--- a/packages/core/test/model-resolver.test.ts
+++ b/packages/core/test/model-resolver.test.ts
@@ -11,6 +11,7 @@ import { Provider } from "@opencode/core/provider"
 import { ModelResolver } from "@opencode/core/model-resolver"
 import { Catalog } from "@opencode/core/catalog"
 import { AISDK } from "@opencode/core/aisdk"
+import { AISDKNative } from "@opencode/core/aisdk-native"
 import { Npm } from "@opencode/util/npm"
 import { it } from "./lib/effect"
 
@@ -26,8 +27,9 @@ interface ModelOptions {
   readonly limit?: Info["limit"]
 }
 
-const model = (packageName: string | undefined, options: ModelOptions = {}) =>
-  Info.make({
+// A catalog model as the resolver receives it: legacy packages are already rewritten to native ones.
+const model = (packageName: string | undefined, options: ModelOptions = {}) => {
+  const info = Info.make({
     id: ID.make("test-model"),
     modelID: ID.make(options.modelID ?? "api-test-model"),
     providerID: options.providerID ?? Provider.ID.make("test-provider"),
@@ -46,6 +48,10 @@ const model = (packageName: string | undefined, options: ModelOptions = {}) =>
     enabled: true,
     limit: options.limit ?? { context: 100, output: 20 },
   })
+  const draft = structuredClone(info)
+  AISDKNative.rewrite({}, [draft])
+  return draft
+}
 
 function withEnv<A, E, R>(variables: Record<string, string | undefined>, effect: () => Effect.Effect<A, E, R>) {
   return Effect.acquireUseRelease(
@@ -215,7 +221,7 @@ describe("ModelResolver", () => {
           id: "bedrock-mantle-responses",
           endpoint: { baseURL: "https://bedrock-mantle.us-west-2.api.aws/openai/v1" },
         })
-        expect(catalog.settings?.baseURL).toBe("https://bedrock-mantle.${AWS_REGION}.api.aws/openai/v1")
+        expect(catalog.settings?.baseURL).toBe("https://bedrock-mantle.us-west-2.api.aws/openai/v1")
       }),
     ),
   )
@@ -478,7 +484,7 @@ describe("ModelResolver", () => {
       expect(prepared.body).toMatchObject({ max_completion_tokens: 10 })
       expect(prepared.body).not.toHaveProperty("max_tokens")
       expect(resolved.route.endpoint.baseURL).toBe("https://compatible.example/v1")
-      expect(resolved.route.defaults.http?.body).toEqual({})
+      expect(resolved.route.defaults.http?.body ?? {}).toEqual({})
     }),
   )
 
@@ -711,7 +717,7 @@ describe("ModelResolver", () => {
         }),
       )
 
-      expect(resolved.route.defaults.http?.body).toEqual({})
+      expect(resolved.route.defaults.http?.body ?? {}).toEqual({})
     }),
   )
 
@@ -1409,7 +1415,7 @@ describe("ModelResolver", () => {
         _tag: "SessionRunnerModel.ModelConfigurationError",
         providerID: "azure",
         modelID: "test-model",
-        package: "aisdk:@ai-sdk/azure",
+        package: "@opencode/ai/providers/azure/responses",
         detail: "Azure requires resourceName or baseURL",
       })
       expect(failure.message).toBe("Cannot initialize azure/test-model: Azure requires resourceName or baseURL")
diff --git a/packages/core/test/models.test.ts b/packages/core/test/models.test.ts
index 1672464ce92c..445c86a6f2a0 100644
--- a/packages/core/test/models.test.ts
+++ b/packages/core/test/models.test.ts
@@ -49,7 +49,7 @@ const fixtureSnapshot = [
       id: Provider.ID.make("acme"),
       name: "Acme",
       activation: "auto",
-      package: Provider.aisdk("@ai-sdk/openai-compatible"),
+      package: "@opencode/ai/providers/openai-compatible",
     },
     models: [
       {
@@ -112,7 +112,7 @@ const fixture2Snapshot = [
       id: Provider.ID.make("beta"),
       name: "Beta",
       activation: "auto",
-      package: Provider.aisdk("@ai-sdk/openai-compatible"),
+      package: "@opencode/ai/providers/openai-compatible",
     },
     models: [
       {
@@ -254,8 +254,8 @@ describe("ModelsDev Service", () => {
         cache,
         ModelsDev.Service.use((service) => service.get()),
       )
-      expect(result[0]?.info.package).toBe(Provider.aisdk("@ai-sdk/openai-compatible"))
-      expect(result[0]?.models[0]?.package).toBe(Provider.aisdk("@ai-sdk/openai"))
+      expect(result[0]?.info.package).toBe("@opencode/ai/providers/openai-compatible")
+      expect(result[0]?.models[0]?.package).toBe("@opencode/ai/providers/openai")
     }),
   )
 
diff --git a/packages/core/test/plugin/models-dev.test.ts b/packages/core/test/plugin/models-dev.test.ts
index 37796b2045bf..0ce45795341d 100644
--- a/packages/core/test/plugin/models-dev.test.ts
+++ b/packages/core/test/plugin/models-dev.test.ts
@@ -1081,18 +1081,19 @@ describe("ModelsDevPlugin", () => {
         Provider.ID.make("amazon-bedrock"),
         Model.ID.make("us.amazon.nova-2-lite-v1:0"),
       )
+      // Native Bedrock takes Converse request fields in the body.
       expect(bedrock?.variants).toEqual([
         {
           id: Model.VariantID.make("none"),
-          settings: { additionalModelRequestFields: { reasoningConfig: { type: "disabled" } } },
+          body: { additionalModelRequestFields: { reasoningConfig: { type: "disabled" } } },
         },
         {
           id: Model.VariantID.make("low"),
-          settings: { reasoningConfig: { type: "enabled", maxReasoningEffort: "low" } },
+          body: { additionalModelRequestFields: { reasoningConfig: { type: "enabled", maxReasoningEffort: "low" } } },
         },
         {
           id: Model.VariantID.make("high"),
-          settings: { reasoningConfig: { type: "enabled", maxReasoningEffort: "high" } },
+          body: { additionalModelRequestFields: { reasoningConfig: { type: "enabled", maxReasoningEffort: "high" } } },
         },
       ])
 
diff --git a/packages/core/test/plugin/provider-amazon-bedrock.test.ts b/packages/core/test/plugin/provider-amazon-bedrock.test.ts
index 44e6a57c4bb0..7c67d94a9701 100644
--- a/packages/core/test/plugin/provider-amazon-bedrock.test.ts
+++ b/packages/core/test/plugin/provider-amazon-bedrock.test.ts
@@ -57,7 +57,7 @@ const seedBedrock = Effect.fn(function* (settings?: Record<string, unknown>) {
   const catalog = yield* Catalog.Service
   yield* catalog.transform((catalog) => {
     catalog.provider.update(Provider.ID.amazonBedrock, (item) => {
-      item.package = Provider.aisdk("@ai-sdk/amazon-bedrock")
+      item.package = "@opencode/ai/providers/amazon-bedrock"
       if (settings) item.settings = settings
     })
   })
@@ -71,7 +71,7 @@ describe("AmazonBedrockPlugin", () => {
         const catalog = yield* seedBedrock({ endpoint: "https://bedrock.example" })
         yield* addPlugin()
         const result = required(yield* catalog.provider.get(Provider.ID.amazonBedrock))
-        expect(result.package).toBe(Provider.aisdk("@ai-sdk/amazon-bedrock"))
+        expect(result.package).toBe("@opencode/ai/providers/amazon-bedrock")
         expect(result.settings).toEqual({ baseURL: "https://bedrock.example", region: "us-east-1" })
       }),
     ),
@@ -152,7 +152,7 @@ describe("AmazonBedrockPlugin", () => {
         const catalog = yield* Catalog.Service
         yield* catalog.transform((catalog) => {
           catalog.provider.update(Provider.ID.amazonBedrock, (item) => {
-            item.package = Provider.aisdk("@ai-sdk/amazon-bedrock")
+            item.package = "@opencode/ai/providers/amazon-bedrock"
             item.activation = "disabled"
           })
         })
@@ -206,13 +206,13 @@ describe("AmazonBedrockPlugin", () => {
         const catalog = yield* Catalog.Service
         yield* catalog.transform((catalog) => {
           catalog.provider.update(Provider.ID.make("mantle"), (item) => {
-            item.package = Provider.aisdk("@ai-sdk/amazon-bedrock/mantle")
+            item.package = "@opencode/ai/providers/amazon-bedrock/mantle/responses"
           })
           catalog.provider.update(Provider.ID.make("native"), (item) => {
             item.package = "@opencode/ai/providers/amazon-bedrock"
           })
           catalog.provider.update(Provider.ID.make("other"), (item) => {
-            item.package = Provider.aisdk("@ai-sdk/anthropic")
+            item.package = "@opencode/ai/providers/anthropic"
           })
         })
         yield* addPlugin()
diff --git a/packages/core/test/plugin/provider-azure.test.ts b/packages/core/test/plugin/provider-azure.test.ts
index a42861fd4e54..bbc73586a8f9 100644
--- a/packages/core/test/plugin/provider-azure.test.ts
+++ b/packages/core/test/plugin/provider-azure.test.ts
@@ -244,7 +244,7 @@ describe("AzurePlugin", () => {
           const catalog = yield* Catalog.Service
           yield* catalog.transform((editor) => {
             editor.provider.update(Provider.ID.azure, (provider) => {
-              provider.package = Provider.aisdk("@ai-sdk/azure")
+              provider.package = "@opencode/ai/providers/azure/responses"
             })
             editor.model.update(Provider.ID.azure, Model.ID.make("gpt-5-mini"), () => {})
             editor.model.update(Provider.ID.azure, Model.ID.make("gpt-5-nano"), () => {})
@@ -311,7 +311,7 @@ describe("AzurePlugin", () => {
         const catalog = yield* Catalog.Service
         yield* catalog.transform((catalog) => {
           catalog.provider.update(Provider.ID.azure, (item) => {
-            item.package = Provider.aisdk("@ai-sdk/azure")
+            item.package = "@opencode/ai/providers/azure/responses"
           })
         })
         yield* addPlugin()
@@ -326,7 +326,7 @@ describe("AzurePlugin", () => {
         const catalog = yield* Catalog.Service
         yield* catalog.transform((catalog) => {
           catalog.provider.update(Provider.ID.azure, (item) => {
-            item.package = Provider.aisdk("@ai-sdk/azure")
+            item.package = "@opencode/ai/providers/azure/responses"
           })
         })
         yield* addPlugin()
@@ -341,13 +341,13 @@ describe("AzurePlugin", () => {
         const catalog = yield* Catalog.Service
         yield* catalog.transform((catalog) => {
           catalog.provider.update(Provider.ID.azure, (provider) => {
-            provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+            provider.package = "@opencode/ai/providers/openai-compatible"
             provider.settings = {
               baseURL: "https://${AZURE_COGNITIVE_SERVICES_RESOURCE_NAME}.cognitiveservices.azure.com/openai",
             }
           })
           catalog.model.update(Provider.ID.azure, Model.ID.make("anthropic"), (model) => {
-            model.package = Provider.aisdk("@ai-sdk/anthropic")
+            model.package = "@opencode/ai/providers/anthropic"
             model.settings = {
               resourceName: "model-resource",
               baseURL: "https://${AZURE_RESOURCE_NAME}.services.ai.azure.com/anthropic/v1",
@@ -376,7 +376,7 @@ describe("AzurePlugin", () => {
         const catalog = yield* Catalog.Service
         yield* catalog.transform((catalog) => {
           catalog.provider.update(Provider.ID.azure, (item) => {
-            item.package = Provider.aisdk("@ai-sdk/azure")
+            item.package = "@opencode/ai/providers/azure/responses"
             item.settings = { resourceName: "from-config" }
           })
           catalog.provider.update(Provider.ID.openai, () => {})
@@ -394,7 +394,7 @@ describe("AzurePlugin", () => {
         const catalog = yield* Catalog.Service
         yield* catalog.transform((catalog) => {
           catalog.provider.update(Provider.ID.azure, (item) => {
-            item.package = Provider.aisdk("@ai-sdk/azure")
+            item.package = "@opencode/ai/providers/azure/responses"
             item.settings = { resourceName: "" }
           })
         })
@@ -410,7 +410,7 @@ describe("AzurePlugin", () => {
         const catalog = yield* Catalog.Service
         yield* catalog.transform((catalog) => {
           catalog.provider.update(Provider.ID.azure, (item) => {
-            item.package = Provider.aisdk("@ai-sdk/azure")
+            item.package = "@opencode/ai/providers/azure/responses"
             item.settings = { resourceName: "   " }
           })
         })
@@ -434,11 +434,11 @@ describe("AzurePlugin", () => {
         }
         yield* catalog.transform((editor) => {
           editor.provider.update(Provider.ID.azure, (provider) => {
-            provider.package = Provider.aisdk("@ai-sdk/azure")
+            provider.package = "@opencode/ai/providers/azure/responses"
           })
           editor.model.update(Provider.ID.azure, models.responses, () => {})
           editor.model.update(Provider.ID.azure, models.chat, (model) => {
-            model.settings = { useCompletionUrls: true }
+            model.package = "@opencode/ai/providers/azure/chat"
           })
           editor.model.update(Provider.ID.azure, models.preview, (model) => {
             model.settings = { apiVersion: "2025-04-01-preview" }
@@ -450,7 +450,7 @@ describe("AzurePlugin", () => {
             model.settings = { baseURL: "https://gateway.example/azure" }
           })
           editor.model.update(Provider.ID.azure, models.nonAzure, (model) => {
-            model.package = Provider.aisdk("@ai-sdk/anthropic")
+            model.package = "@opencode/ai/providers/anthropic"
           })
         })
 
@@ -467,5 +467,4 @@ describe("AzurePlugin", () => {
       }),
     ),
   )
-
 })
diff --git a/packages/core/test/plugin/provider-cerebras.test.ts b/packages/core/test/plugin/provider-cerebras.test.ts
index 9940c5b5bd59..d8cfb337ea9d 100644
--- a/packages/core/test/plugin/provider-cerebras.test.ts
+++ b/packages/core/test/plugin/provider-cerebras.test.ts
@@ -22,7 +22,7 @@ describe("CerebrasPlugin", () => {
       const catalog = yield* Catalog.Service
       yield* catalog.transform((catalog) => {
         catalog.provider.update(Provider.ID.make("cerebras"), (item) => {
-          item.package = Provider.aisdk("@ai-sdk/cerebras")
+          item.package = "@opencode/ai/providers/cerebras"
           item.headers = { ...item.headers, Existing: "1" }
         })
       })
diff --git a/packages/core/test/plugin/provider-github-copilot.test.ts b/packages/core/test/plugin/provider-github-copilot.test.ts
index 6e4c53aac724..9b5f3810cd90 100644
--- a/packages/core/test/plugin/provider-github-copilot.test.ts
+++ b/packages/core/test/plugin/provider-github-copilot.test.ts
@@ -302,7 +302,7 @@ describe("GithubCopilotPlugin", () => {
       yield* catalog.transform((catalog) => {
         catalog.provider.update(Provider.ID.githubCopilot, () => {})
         catalog.model.update(Provider.ID.githubCopilot, Model.ID.make("gpt-5.6-sol"), (model) => {
-          model.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          model.package = "@opencode/ai/providers/openai-compatible"
         })
       })
       yield* addPlugin()
diff --git a/packages/core/test/plugin/provider-google-vertex.test.ts b/packages/core/test/plugin/provider-google-vertex.test.ts
index 306907def6b4..a68b7ad22543 100644
--- a/packages/core/test/plugin/provider-google-vertex.test.ts
+++ b/packages/core/test/plugin/provider-google-vertex.test.ts
@@ -69,7 +69,7 @@ describe("GoogleVertexPlugin", () => {
       const catalog = yield* Catalog.Service
       yield* catalog.transform((catalog) =>
         catalog.provider.update(Provider.ID.opencode, (provider) => {
-          provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          provider.package = "@opencode/ai/providers/openai-compatible"
           provider.settings = { ...provider.settings, baseURL: "https://opencode.ai/zen/v1" }
         }),
       )
@@ -95,7 +95,7 @@ describe("GoogleVertexPlugin", () => {
           const catalog = yield* Catalog.Service
           yield* catalog.transform((catalog) =>
             catalog.provider.update(Provider.ID.make("google-vertex"), (provider) => {
-              provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+              provider.package = "@opencode/ai/providers/openai-compatible"
               provider.settings = {
                 ...provider.settings,
                 baseURL:
@@ -108,7 +108,7 @@ describe("GoogleVertexPlugin", () => {
           expect(provider.settings?.project).toBe("google-cloud-project")
           expect(provider.settings?.location).toBe("google-vertex-location")
           expect(provider).toMatchObject({
-            package: "aisdk:@ai-sdk/openai-compatible",
+            package: "@opencode/ai/providers/openai-compatible",
             settings: {
               baseURL:
                 "https://google-vertex-location-aiplatform.googleapis.com/v1/projects/google-cloud-project/locations/google-vertex-location",
@@ -131,7 +131,7 @@ describe("GoogleVertexPlugin", () => {
           const catalog = yield* Catalog.Service
           yield* catalog.transform((catalog) =>
             catalog.provider.update(Provider.ID.make("google-vertex"), (provider) => {
-              provider.package = Provider.aisdk("@ai-sdk/google-vertex")
+              provider.package = "@opencode/ai/providers/google-vertex"
             }),
           )
           yield* addPlugin()
@@ -154,7 +154,7 @@ describe("GoogleVertexPlugin", () => {
           const catalog = yield* Catalog.Service
           yield* catalog.transform((catalog) =>
             catalog.provider.update(Provider.ID.make("google-vertex"), (provider) => {
-              provider.package = Provider.aisdk("@ai-sdk/google-vertex")
+              provider.package = "@opencode/ai/providers/google-vertex"
             }),
           )
           yield* addPlugin()
@@ -180,7 +180,7 @@ describe("GoogleVertexPlugin", () => {
           const catalog = yield* Catalog.Service
           yield* catalog.transform((catalog) =>
             catalog.provider.update(Provider.ID.make("google-vertex"), (provider) => {
-              provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+              provider.package = "@opencode/ai/providers/openai-compatible"
               provider.settings = {
                 ...provider.settings,
                 baseURL:
@@ -193,7 +193,7 @@ describe("GoogleVertexPlugin", () => {
 
           expect(provider.settings?.project).toBe("vertex-project")
           expect(provider).toMatchObject({
-            package: "aisdk:@ai-sdk/openai-compatible",
+            package: "@opencode/ai/providers/openai-compatible",
             settings: {
               baseURL:
                 "https://europe-west4-aiplatform.googleapis.com/v1/projects/vertex-project/locations/europe-west4",
@@ -218,7 +218,7 @@ describe("GoogleVertexPlugin", () => {
           const catalog = yield* Catalog.Service
           yield* catalog.transform((catalog) => {
             catalog.provider.update(Provider.ID.make("google-vertex"), (provider) => {
-              provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+              provider.package = "@opencode/ai/providers/openai-compatible"
               provider.settings = {
                 ...provider.settings,
                 baseURL:
@@ -234,7 +234,7 @@ describe("GoogleVertexPlugin", () => {
           expect(provider.settings?.project).toBe("config-project")
           expect(provider.settings?.location).toBe("global")
           expect(provider).toMatchObject({
-            package: "aisdk:@ai-sdk/openai-compatible",
+            package: "@opencode/ai/providers/openai-compatible",
             settings: { baseURL: "https://aiplatform.googleapis.com/v1/projects/config-project/locations/global" },
           })
           expect(model.settings).toEqual(provider.settings)
@@ -247,7 +247,7 @@ describe("GoogleVertexPlugin", () => {
       const catalog = yield* Catalog.Service
       yield* catalog.transform((catalog) =>
         catalog.provider.update(Provider.ID.make("google-vertex"), (provider) => {
-          provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          provider.package = "@opencode/ai/providers/openai-compatible"
           provider.settings = {
             ...provider.settings,
             baseURL:
@@ -259,7 +259,7 @@ describe("GoogleVertexPlugin", () => {
       yield* addPlugin()
       const provider = required(yield* catalog.provider.get(Provider.ID.make("google-vertex")))
       expect(provider).toMatchObject({
-        package: "aisdk:@ai-sdk/openai-compatible",
+        package: "@opencode/ai/providers/openai-compatible",
         settings: { baseURL: "https://eu-aiplatform.googleapis.com/v1/projects/config-project/locations/eu" },
       })
     }),
@@ -280,7 +280,7 @@ describe("GoogleVertexPlugin", () => {
           const catalog = yield* Catalog.Service
           yield* catalog.transform((catalog) =>
             catalog.provider.update(Provider.ID.make("google-vertex"), (provider) => {
-              provider.package = Provider.aisdk("@ai-sdk/google-vertex")
+              provider.package = "@opencode/ai/providers/google-vertex"
               provider.settings = { ...provider.settings, project: "config-project" }
             }),
           )
@@ -313,7 +313,7 @@ describe("GoogleVertexPlugin", () => {
         model: Model.Info.make({
           ...Model.Info.default(Provider.ID.make("google-vertex"), Model.ID.make("gemini")),
           modelID: Model.ID.make("gemini"),
-          package: "aisdk:@ai-sdk/openai-compatible",
+          package: "@opencode/ai/providers/openai-compatible",
         }),
         package: "@ai-sdk/openai-compatible",
         options: {
diff --git a/packages/core/test/plugin/provider-kilo.test.ts b/packages/core/test/plugin/provider-kilo.test.ts
index ccfd90241c96..97fd3e6d0714 100644
--- a/packages/core/test/plugin/provider-kilo.test.ts
+++ b/packages/core/test/plugin/provider-kilo.test.ts
@@ -27,7 +27,7 @@ describe("KiloPlugin", () => {
       const catalog = yield* Catalog.Service
       yield* catalog.transform((catalog) => {
         catalog.provider.update(Provider.ID.make("kilo"), (provider) => {
-          provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          provider.package = "@opencode/ai/providers/openai-compatible"
           provider.settings = { baseURL: "https://api.kilo.ai/api/gateway" }
           provider.headers = { Existing: "value" }
         })
@@ -48,7 +48,7 @@ describe("KiloPlugin", () => {
       const catalog = yield* Catalog.Service
       yield* catalog.transform((catalog) => {
         catalog.provider.update(Provider.ID.make("kilo"), (provider) => {
-          provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          provider.package = "@opencode/ai/providers/openai-compatible"
           provider.settings = { baseURL: "https://api.kilo.ai/api/gateway" }
         })
       })
@@ -72,7 +72,7 @@ describe("KiloPlugin", () => {
           provider.package = Provider.aisdk("kilo")
         })
         catalog.provider.update(Provider.ID.make("custom-kilo"), (provider) => {
-          provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          provider.package = "@opencode/ai/providers/openai-compatible"
           provider.settings = { baseURL: "https://api.kilo.ai/api/gateway" }
         })
       })
diff --git a/packages/core/test/plugin/provider-llmgateway.test.ts b/packages/core/test/plugin/provider-llmgateway.test.ts
index 5f8e381983f4..b7256602891b 100644
--- a/packages/core/test/plugin/provider-llmgateway.test.ts
+++ b/packages/core/test/plugin/provider-llmgateway.test.ts
@@ -33,7 +33,7 @@ describe("LLMGatewayPlugin", () => {
       })
       yield* catalog.transform((catalog) => {
         catalog.provider.update(Provider.ID.make("llmgateway"), (provider) => {
-          provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          provider.package = "@opencode/ai/providers/openai-compatible"
           provider.settings = { baseURL: "https://api.llmgateway.io/v1" }
           provider.headers = { Existing: "value" }
         })
@@ -60,7 +60,7 @@ describe("LLMGatewayPlugin", () => {
       yield* catalog.transform((catalog) => {
         catalog.provider.update(Provider.ID.make("llmgateway"), (provider) => {
           provider.activation = "disabled"
-          provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          provider.package = "@opencode/ai/providers/openai-compatible"
           provider.settings = { baseURL: "https://api.llmgateway.io/v1" }
         })
       })
diff --git a/packages/core/test/plugin/provider-nvidia.test.ts b/packages/core/test/plugin/provider-nvidia.test.ts
index 667fc6c44aea..a247a6f227ba 100644
--- a/packages/core/test/plugin/provider-nvidia.test.ts
+++ b/packages/core/test/plugin/provider-nvidia.test.ts
@@ -27,7 +27,7 @@ describe("NvidiaPlugin", () => {
       const catalog = yield* Catalog.Service
       yield* catalog.transform((catalog) => {
         catalog.provider.update(Provider.ID.make("nvidia"), (provider) => {
-          provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          provider.package = "@opencode/ai/providers/openai-compatible"
           provider.settings = { baseURL: "https://integrate.api.nvidia.com/v1" }
           provider.headers = { Existing: "value" }
         })
@@ -49,7 +49,7 @@ describe("NvidiaPlugin", () => {
       const catalog = yield* Catalog.Service
       yield* catalog.transform((catalog) => {
         catalog.provider.update(Provider.ID.make("nvidia"), (provider) => {
-          provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          provider.package = "@opencode/ai/providers/openai-compatible"
           provider.settings = { baseURL: "https://integrate.api.nvidia.com/v1" }
         })
       })
@@ -68,7 +68,7 @@ describe("NvidiaPlugin", () => {
       const catalog = yield* Catalog.Service
       yield* catalog.transform((catalog) => {
         catalog.provider.update(Provider.ID.make("nvidia"), (provider) => {
-          provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          provider.package = "@opencode/ai/providers/openai-compatible"
           provider.settings = { baseURL: "https://integrate.api.nvidia.com/v1" }
           provider.headers = { "X-BILLING-INVOKE-ORIGIN": "CustomOrigin" }
         })
diff --git a/packages/core/test/plugin/provider-ollama.test.ts b/packages/core/test/plugin/provider-ollama.test.ts
index 1bf3fb7d7896..97abb31cdc6a 100644
--- a/packages/core/test/plugin/provider-ollama.test.ts
+++ b/packages/core/test/plugin/provider-ollama.test.ts
@@ -71,7 +71,7 @@ describe("OllamaPlugin", () => {
                     }
                   : body.model === "unknown-context"
                     ? show({ family: "unknown", capabilities: ["completion"], context: 0 })
-                  : show({ family: "nomic-bert", capabilities: ["embedding"], context: 8192 }),
+                    : show({ family: "nomic-bert", capabilities: ["embedding"], context: 8192 }),
               )
             },
           }),
diff --git a/packages/core/test/plugin/provider-opencode.test.ts b/packages/core/test/plugin/provider-opencode.test.ts
index 1bcb8f8990be..aac0bb7ff3dc 100644
--- a/packages/core/test/plugin/provider-opencode.test.ts
+++ b/packages/core/test/plugin/provider-opencode.test.ts
@@ -370,7 +370,7 @@ describe("OpencodePlugin", () => {
                   remote: {
                     canonical: "openai",
                     name: "Remote",
-                    package: "aisdk:@ai-sdk/openai-compatible",
+                    package: "@opencode/ai/providers/openai-compatible",
                     env: ["REMOTE_API_KEY"],
                     settings: {
                       baseURL: `${origin}/v1`,
@@ -409,7 +409,7 @@ describe("OpencodePlugin", () => {
                       },
                       override: {
                         name: "Override",
-                        package: "aisdk:@ai-sdk/anthropic",
+                        package: "@opencode/ai/providers/anthropic",
                         settings: { baseURL: `${origin}/anthropic` },
                       },
                       disabled: { name: "Disabled", disabled: true },
@@ -428,11 +428,11 @@ describe("OpencodePlugin", () => {
           const integrations = yield* Integration.Service
           yield* catalog.transform((editor) => {
             editor.provider.update(Provider.ID.openai, (provider) => {
-              provider.package = Provider.aisdk("@ai-sdk/openai")
+              provider.package = "@opencode/ai/providers/openai"
               provider.integrationID = Integration.ID.make("openai")
             })
             editor.model.update(Provider.ID.openai, Model.ID.make("api-model"), (model) => {
-              model.package = Provider.aisdk("@ai-sdk/openai")
+              model.package = "@opencode/ai/providers/openai"
               model.settings = { baseURL: "https://upstream.example/v1" }
               model.variants = [
                 {
@@ -464,7 +464,7 @@ describe("OpencodePlugin", () => {
             canonical: "openai",
             name: "Remote",
             integrationID: "opencode",
-            package: Provider.aisdk("@ai-sdk/openai-compatible"),
+            package: "@opencode/ai/providers/openai-compatible",
             settings: { baseURL: `${server.url.origin}/v1`, custom: "value" },
             headers: { "x-org-id": "org" },
           })
@@ -481,13 +481,13 @@ describe("OpencodePlugin", () => {
             capabilities: { tools: true, input: ["text", "image"], output: ["text"] },
             cost: [{ input: 1, output: 2, cache: { read: 0.1, write: 0 } }],
             limit: { context: 1000, output: 100 },
-            package: Provider.aisdk("@ai-sdk/openai-compatible"),
+            package: "@opencode/ai/providers/openai-compatible",
             settings: { baseURL: `${server.url.origin}/v1`, custom: "value", temperature: 0.5 },
             headers: { "x-org-id": "org" },
           })
           expect(model.settings).toEqual({ baseURL: `${server.url.origin}/v1`, custom: "value", temperature: 0.5 })
           const override = required(yield* catalog.model.get(Provider.ID.make("remote"), Model.ID.make("override")))
-          expect(override.package).toBe(Provider.aisdk("@ai-sdk/anthropic"))
+          expect(override.package).toBe("@opencode/ai/providers/anthropic")
           expect(override.settings?.baseURL).toBe(`${server.url.origin}/anthropic`)
           expect(model.variants).toEqual([
             {
@@ -990,16 +990,16 @@ describe("OpencodePlugin", () => {
                 providers: {
                   remote: {
                     canonical: "openai",
-                    package: "aisdk:@ai-sdk/openai",
+                    package: "@opencode/ai/providers/openai",
                     settings: { baseURL: new URL(request.url).origin },
                     models: {
                       ...models,
-                      override: { ...models.astra, package: "aisdk:@ai-sdk/openai-compatible" },
+                      override: { ...models.astra, package: "@opencode/ai/providers/openai-compatible" },
                     },
                   },
                   compatible: {
                     canonical: "openai",
-                    package: "aisdk:@ai-sdk/openai-compatible",
+                    package: "@opencode/ai/providers/openai-compatible",
                     models,
                   },
                 },
diff --git a/packages/core/test/plugin/provider-openrouter.test.ts b/packages/core/test/plugin/provider-openrouter.test.ts
index 3a4061852bd2..69f56e578159 100644
--- a/packages/core/test/plugin/provider-openrouter.test.ts
+++ b/packages/core/test/plugin/provider-openrouter.test.ts
@@ -28,7 +28,7 @@ describe("OpenRouterPlugin", () => {
       const catalog = yield* Catalog.Service
       yield* catalog.transform((catalog) => {
         catalog.provider.update(Provider.ID.openrouter, (provider) => {
-          provider.package = Provider.aisdk("@openrouter/ai-sdk-provider")
+          provider.package = "@opencode/ai/providers/openrouter"
           provider.headers = { Existing: "value" }
         })
         catalog.provider.update(Provider.ID.make("nvidia"), () => {})
@@ -49,7 +49,7 @@ describe("OpenRouterPlugin", () => {
       const catalog = yield* Catalog.Service
       yield* catalog.transform((catalog) => {
         catalog.provider.update(Provider.ID.openrouter, (provider) => {
-          provider.package = Provider.aisdk("@openrouter/ai-sdk-provider")
+          provider.package = "@opencode/ai/providers/openrouter"
         })
         catalog.provider.update(Provider.ID.openai, () => {})
         catalog.model.update(Provider.ID.openrouter, Model.ID.make("openai/gpt-5-chat"), () => {})
diff --git a/packages/core/test/plugin/provider-poe.test.ts b/packages/core/test/plugin/provider-poe.test.ts
index c2288cc3cf9d..923ff7f27f0b 100644
--- a/packages/core/test/plugin/provider-poe.test.ts
+++ b/packages/core/test/plugin/provider-poe.test.ts
@@ -43,7 +43,7 @@ const fixture = Effect.gen(function* () {
   })
   yield* catalog.transform((editor) => {
     editor.provider.update(providerID, (provider) => {
-      provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+      provider.package = "@opencode/ai/providers/openai-compatible"
       provider.settings = { baseURL: "https://api.poe.com/v1" }
     })
     editor.model.update(providerID, modelID, () => {})
diff --git a/packages/core/test/plugin/provider-snowflake-cortex.test.ts b/packages/core/test/plugin/provider-snowflake-cortex.test.ts
index 063d38884c99..3c0595c55e2b 100644
--- a/packages/core/test/plugin/provider-snowflake-cortex.test.ts
+++ b/packages/core/test/plugin/provider-snowflake-cortex.test.ts
@@ -56,7 +56,7 @@ const fixture = Effect.fn(function* () {
   const host = yield* PluginHost.make(plugin)
   yield* catalog.transform((editor) => {
     editor.provider.update(providerID, (provider) => {
-      provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+      provider.package = "@opencode/ai/providers/openai-compatible"
       provider.settings = { baseURL: "https://${SNOWFLAKE_ACCOUNT}.snowflakecomputing.com/api/v2/cortex/v1" }
     })
     editor.model.update(providerID, modelID, () => {})
@@ -225,9 +225,7 @@ it.live("uses environment tokens rather than the account identifier and bypasses
           type: "env",
           name: "SNOWFLAKE_CORTEX_TOKEN",
         })
-        expect((yield* test.catalog.provider.get(providerID))?.package).toBe(
-          Provider.aisdk("@ai-sdk/openai-compatible"),
-        )
+        expect((yield* test.catalog.provider.get(providerID))?.package).toBe("@opencode/ai/providers/openai-compatible")
         expect(yield* test.hooks.has("aisdk", "sdk", providerID)).toBe(false)
 
         yield* test.stop
diff --git a/packages/core/test/plugin/provider-zenmux.test.ts b/packages/core/test/plugin/provider-zenmux.test.ts
index 9ada80a90d23..a9a8f4553bbd 100644
--- a/packages/core/test/plugin/provider-zenmux.test.ts
+++ b/packages/core/test/plugin/provider-zenmux.test.ts
@@ -32,7 +32,7 @@ describe("ZenmuxPlugin", () => {
       const catalog = yield* Catalog.Service
       yield* catalog.transform((catalog) => {
         catalog.provider.update(Provider.ID.make("zenmux"), (provider) => {
-          provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          provider.package = "@opencode/ai/providers/openai-compatible"
           provider.settings = { ...provider.settings, baseURL: "https://zenmux.ai/api/v1" }
         })
       })
@@ -48,7 +48,7 @@ describe("ZenmuxPlugin", () => {
       const catalog = yield* Catalog.Service
       yield* catalog.transform((catalog) => {
         catalog.provider.update(Provider.ID.make("zenmux"), (provider) => {
-          provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          provider.package = "@opencode/ai/providers/openai-compatible"
           provider.settings = { ...provider.settings, baseURL: "https://zenmux.ai/api/v1" }
           provider.headers = { ...provider.headers, Existing: "value" }
         })
@@ -68,7 +68,7 @@ describe("ZenmuxPlugin", () => {
       const catalog = yield* Catalog.Service
       yield* catalog.transform((catalog) => {
         catalog.provider.update(Provider.ID.make("zenmux"), (provider) => {
-          provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          provider.package = "@opencode/ai/providers/openai-compatible"
           provider.settings = { ...provider.settings, baseURL: "https://zenmux.ai/api/v1" }
           provider.headers = { "HTTP-Referer": "https://example.com/", "X-Title": "custom-title" }
         })
diff --git a/packages/core/test/plugin/skill.test.ts b/packages/core/test/plugin/skill.test.ts
index 66fdbed89318..7e379b1e8419 100644
--- a/packages/core/test/plugin/skill.test.ts
+++ b/packages/core/test/plugin/skill.test.ts
@@ -71,12 +71,7 @@ describe("SkillPlugin.Plugin", () => {
       expect(report?.content).toContain("- Active plugins: -disabled, local.ts, package-plugin, package-plugin")
     }).pipe(
       Effect.provide(
-        config([
-          "package-plugin",
-          "-disabled",
-          "local.ts",
-          { package: "package-plugin", options: { enabled: true } },
-        ]),
+        config(["package-plugin", "-disabled", "local.ts", { package: "package-plugin", options: { enabled: true } }]),
       ),
     ),
   )
diff --git a/packages/core/test/plugin/variant.test.ts b/packages/core/test/plugin/variant.test.ts
index 249364592a64..b688c3ee5a44 100644
--- a/packages/core/test/plugin/variant.test.ts
+++ b/packages/core/test/plugin/variant.test.ts
@@ -23,11 +23,11 @@ describe("VariantPlugin", () => {
       const service = yield* Catalog.Service
       yield* service.transform((catalog) => {
         catalog.provider.update(Provider.ID.opencode, (provider) => {
-          provider.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          provider.package = "@opencode/ai/providers/openai-compatible"
         })
         catalog.model.update(Provider.ID.opencode, Model.ID.make("glm-5.2"), (model) => {
           model.modelID = Model.ID.make("glm-5.2")
-          model.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          model.package = "@opencode/ai/providers/openai-compatible"
         })
       })
       yield* VariantPlugin.Plugin.effect(host({ catalog: catalogHost(service) }))
@@ -45,7 +45,7 @@ describe("VariantPlugin", () => {
       yield* service.transform((catalog) => {
         catalog.model.update(Provider.ID.opencode, Model.ID.make("glm-5.2"), (model) => {
           model.modelID = Model.ID.make("glm-5.2")
-          model.package = Provider.aisdk("@ai-sdk/openai-compatible")
+          model.package = "@opencode/ai/providers/openai-compatible"
           model.variants = [{ id: Model.VariantID.make("high"), settings: {}, headers: { custom: "true" }, body: {} }]
         })
       })
diff --git a/services/www/src/docs/content/migrate-v1.mdx b/services/www/src/docs/content/migrate-v1.mdx
index da5c8c432ae5..250145357e98 100644
--- a/services/www/src/docs/content/migrate-v1.mdx
+++ b/services/www/src/docs/content/migrate-v1.mdx
@@ -336,7 +336,7 @@ Rename the singular `provider` map to `providers`. V2 separates the runtime pack
 {
   "providers": {
     "acme": {
-      "package": "aisdk:@ai-sdk/openai-compatible",
+      "package": "@opencode/ai/providers/openai-compatible",
       "settings": {
         "baseURL": "https://llm.example.com/v1",
         "apiKey": "{env:ACME_API_KEY}"
@@ -346,8 +346,10 @@ Rename the singular `provider` map to `providers`. V2 separates the runtime pack
 }
 ```
 
-V1 `npm` becomes `package`, and AI SDK packages receive the `aisdk:` prefix. `api` becomes `settings.baseURL`. Provider
-`options` are separated into `settings`, `headers`, and `body` according to their request role. See [Providers](/providers).
+V1 `npm` becomes `package`. AI SDK packages with a native OpenCode implementation become that native package, and their
+options are rewritten to the native spelling; other AI SDK packages keep running on the AI SDK with an `aisdk:` prefix.
+`api` becomes `settings.baseURL`. Provider `options` are separated into `settings`, `headers`, and `body` according to
+their request role. See [Providers](/providers).
 
 V2 consolidated two legacy provider namespaces: