From 59cb2f0d2db9238e724e0389e88192f471a2c83e Mon Sep 17 00:00:00 2001
From: Siddharth Ganesan <siddharthganesan@gmail.com>
Date: Tue, 10 Feb 2026 10:49:27 -0800
Subject: [PATCH 1/9] Copilot enterprise models

---
 apps/sim/app/api/copilot/chat/route.ts        |  4 +-
 apps/sim/app/api/copilot/models/route.ts      | 68 ++++++++++++++
 .../model-selector/model-selector.tsx         | 92 +++++++++++++------
 .../components/user-input/constants.ts        | 13 ---
 .../panel/components/copilot/copilot.tsx      |  2 +
 .../hooks/use-copilot-initialization.ts       | 13 +++
 apps/sim/lib/copilot/chat-payload.ts          | 50 ----------
 apps/sim/lib/copilot/constants.ts             |  3 +
 apps/sim/lib/copilot/models.ts                |  2 +-
 apps/sim/lib/copilot/types.ts                 |  6 ++
 apps/sim/stores/panel/copilot/store.ts        | 49 ++++++++++
 apps/sim/stores/panel/copilot/types.ts        |  4 +
 12 files changed, 214 insertions(+), 92 deletions(-)
 create mode 100644 apps/sim/app/api/copilot/models/route.ts

diff --git a/apps/sim/app/api/copilot/chat/route.ts b/apps/sim/app/api/copilot/chat/route.ts
index 248298348c..3fca3e32a8 100644
--- a/apps/sim/app/api/copilot/chat/route.ts
+++ b/apps/sim/app/api/copilot/chat/route.ts
@@ -10,7 +10,7 @@ import { resolveOrCreateChat } from '@/lib/copilot/chat-lifecycle'
 import { buildCopilotRequestPayload } from '@/lib/copilot/chat-payload'
 import { generateChatTitle } from '@/lib/copilot/chat-title'
 import { getCopilotModel } from '@/lib/copilot/config'
-import { COPILOT_MODEL_IDS, COPILOT_REQUEST_MODES } from '@/lib/copilot/models'
+import { COPILOT_REQUEST_MODES } from '@/lib/copilot/models'
 import { orchestrateCopilotStream } from '@/lib/copilot/orchestrator'
 import {
   createStreamEventWriter,
@@ -43,7 +43,7 @@ const ChatMessageSchema = z.object({
   chatId: z.string().optional(),
   workflowId: z.string().optional(),
   workflowName: z.string().optional(),
-  model: z.enum(COPILOT_MODEL_IDS).optional().default('claude-4.6-opus'),
+  model: z.string().optional().default('claude-4.6-opus'),
   mode: z.enum(COPILOT_REQUEST_MODES).optional().default('agent'),
   prefetch: z.boolean().optional(),
   createNewChat: z.boolean().optional().default(false),
diff --git a/apps/sim/app/api/copilot/models/route.ts b/apps/sim/app/api/copilot/models/route.ts
new file mode 100644
index 0000000000..dfd471ff54
--- /dev/null
+++ b/apps/sim/app/api/copilot/models/route.ts
@@ -0,0 +1,68 @@
+import { createLogger } from '@sim/logger'
+import { type NextRequest, NextResponse } from 'next/server'
+import { SIM_AGENT_API_URL } from '@/lib/copilot/constants'
+import { authenticateCopilotRequestSessionOnly } from '@/lib/copilot/request-helpers'
+import { env } from '@/lib/core/config/env'
+import type { AvailableModel } from '@/lib/copilot/types'
+
+const logger = createLogger('CopilotModelsAPI')
+
+export async function GET(_req: NextRequest) {
+  const { userId, isAuthenticated } = await authenticateCopilotRequestSessionOnly()
+  if (!isAuthenticated || !userId) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+
+  const headers: Record<string, string> = {
+    'Content-Type': 'application/json',
+  }
+  if (env.COPILOT_API_KEY) {
+    headers['x-api-key'] = env.COPILOT_API_KEY
+  }
+
+  try {
+    const response = await fetch(`${SIM_AGENT_API_URL}/api/get-available-models`, {
+      method: 'GET',
+      headers,
+      cache: 'no-store',
+    })
+
+    const payload = await response.json().catch(() => ({}))
+    if (!response.ok) {
+      logger.warn('Failed to fetch available models from copilot backend', {
+        status: response.status,
+      })
+      return NextResponse.json(
+        {
+          success: false,
+          error: payload?.error || 'Failed to fetch available models',
+          models: [],
+        },
+        { status: response.status }
+      )
+    }
+
+    const rawModels = Array.isArray(payload?.models) ? payload.models : []
+    const models: AvailableModel[] = rawModels
+      .filter((item: any) => item && typeof item.id === 'string')
+      .map((item: any) => ({
+        id: item.id,
+        friendlyName: item.friendlyName || item.displayName || item.id,
+        provider: item.provider || 'unknown',
+      }))
+
+    return NextResponse.json({ success: true, models })
+  } catch (error) {
+    logger.error('Error fetching available models', {
+      error: error instanceof Error ? error.message : String(error),
+    })
+    return NextResponse.json(
+      {
+        success: false,
+        error: 'Failed to fetch available models',
+        models: [],
+      },
+      { status: 500 }
+    )
+  }
+}
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx
index 7c639ed010..5eaf1af698 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx
@@ -1,6 +1,6 @@
 'use client'
 
-import { useEffect, useRef, useState } from 'react'
+import { useEffect, useMemo, useRef, useState } from 'react'
 import {
   Badge,
   Popover,
@@ -9,8 +9,14 @@ import {
   PopoverItem,
   PopoverScrollArea,
 } from '@/components/emcn'
-import { getProviderIcon } from '@/providers/utils'
-import { MODEL_OPTIONS } from '../../constants'
+import {
+  AnthropicIcon,
+  AzureIcon,
+  BedrockIcon,
+  GeminiIcon,
+  OpenAIIcon,
+} from '@/components/icons'
+import { useCopilotStore } from '@/stores/panel'
 
 interface ModelSelectorProps {
   /** Currently selected model */
@@ -22,14 +28,22 @@ interface ModelSelectorProps {
 }
 
 /**
- * Gets the appropriate icon component for a model
+ * Map a provider string (from the available-models API) to its icon component.
+ * Falls back to null when the provider is unrecognised.
  */
-function getModelIconComponent(modelValue: string) {
-  const IconComponent = getProviderIcon(modelValue)
-  if (!IconComponent) {
-    return null
-  }
-  return <IconComponent className='h-3.5 w-3.5' />
+const PROVIDER_ICON_MAP: Record<string, React.ComponentType<{ className?: string }>> = {
+  anthropic: AnthropicIcon,
+  openai: OpenAIIcon,
+  gemini: GeminiIcon,
+  google: GeminiIcon,
+  bedrock: BedrockIcon,
+  azure: AzureIcon,
+  'azure-openai': AzureIcon,
+  'azure-anthropic': AzureIcon,
+}
+
+function getIconForProvider(provider: string): React.ComponentType<{ className?: string }> | null {
+  return PROVIDER_ICON_MAP[provider] ?? null
 }
 
 /**
@@ -43,17 +57,31 @@ export function ModelSelector({ selectedModel, isNearTop, onModelSelect }: Model
   const [open, setOpen] = useState(false)
   const triggerRef = useRef<HTMLDivElement>(null)
   const popoverRef = useRef<HTMLDivElement>(null)
+  const availableModels = useCopilotStore((state) => state.availableModels)
+
+  const modelOptions = useMemo(() => {
+    return availableModels.map((model) => ({
+      value: model.id,
+      label: model.friendlyName || model.id,
+      provider: model.provider,
+    }))
+  }, [availableModels])
+
+  /** Look up the provider for a model id from the available-models list */
+  const getProviderForModel = (modelId: string): string | undefined => {
+    return availableModels.find((m) => m.id === modelId)?.provider
+  }
 
   const getCollapsedModeLabel = () => {
-    const model = MODEL_OPTIONS.find((m) => m.value === selectedModel)
-    return model ? model.label : 'claude-4.5-sonnet'
+    const model = modelOptions.find((m) => m.value === selectedModel)
+    return model?.label || selectedModel || 'No models available'
   }
 
   const getModelIcon = () => {
-    const IconComponent = getProviderIcon(selectedModel)
-    if (!IconComponent) {
-      return null
-    }
+    const provider = getProviderForModel(selectedModel)
+    if (!provider) return null
+    const IconComponent = getIconForProvider(provider)
+    if (!IconComponent) return null
     return (
       <span className='flex-shrink-0'>
         <IconComponent className='h-3 w-3' />
@@ -61,6 +89,14 @@ export function ModelSelector({ selectedModel, isNearTop, onModelSelect }: Model
     )
   }
 
+  const getModelIconComponent = (modelValue: string) => {
+    const provider = getProviderForModel(modelValue)
+    if (!provider) return null
+    const IconComponent = getIconForProvider(provider)
+    if (!IconComponent) return null
+    return <IconComponent className='h-3.5 w-3.5' />
+  }
+
   const handleSelect = (modelValue: string) => {
     onModelSelect(modelValue)
     setOpen(false)
@@ -124,16 +160,20 @@ export function ModelSelector({ selectedModel, isNearTop, onModelSelect }: Model
         onCloseAutoFocus={(e) => e.preventDefault()}
       >
         <PopoverScrollArea className='space-y-[2px]'>
-          {MODEL_OPTIONS.map((option) => (
-            <PopoverItem
-              key={option.value}
-              active={selectedModel === option.value}
-              onClick={() => handleSelect(option.value)}
-            >
-              {getModelIconComponent(option.value)}
-              <span>{option.label}</span>
-            </PopoverItem>
-          ))}
+          {modelOptions.length > 0 ? (
+            modelOptions.map((option) => (
+              <PopoverItem
+                key={option.value}
+                active={selectedModel === option.value}
+                onClick={() => handleSelect(option.value)}
+              >
+                {getModelIconComponent(option.value)}
+                <span>{option.label}</span>
+              </PopoverItem>
+            ))
+          ) : (
+            <div className='px-2 py-2 text-xs text-[var(--text-muted)]'>No models available</div>
+          )}
         </PopoverScrollArea>
       </PopoverContent>
     </Popover>
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/constants.ts b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/constants.ts
index faff318f9f..89173e92b0 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/constants.ts
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/constants.ts
@@ -242,19 +242,6 @@ export function getCommandDisplayLabel(commandId: string): string {
   return command?.label || commandId.charAt(0).toUpperCase() + commandId.slice(1)
 }
 
-/**
- * Model configuration options
- */
-export const MODEL_OPTIONS = [
-  { value: 'claude-4.6-opus', label: 'Claude 4.6 Opus' },
-  { value: 'claude-4.5-opus', label: 'Claude 4.5 Opus' },
-  { value: 'claude-4.5-sonnet', label: 'Claude 4.5 Sonnet' },
-  { value: 'claude-4.5-haiku', label: 'Claude 4.5 Haiku' },
-  { value: 'gpt-5.2-codex', label: 'GPT 5.2 Codex' },
-  { value: 'gpt-5.2-pro', label: 'GPT 5.2 Pro' },
-  { value: 'gemini-3-pro', label: 'Gemini 3 Pro' },
-] as const
-
 /**
  * Threshold for considering input "near top" of viewport (in pixels)
  */
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/copilot.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/copilot.tsx
index 39e2a0095a..18222f8dfa 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/copilot.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/copilot.tsx
@@ -112,6 +112,7 @@ export const Copilot = forwardRef<CopilotRef, CopilotProps>(({ panelWidth }, ref
     closePlanTodos,
     clearPlanArtifact,
     savePlanArtifact,
+    loadAvailableModels,
     loadAutoAllowedTools,
     resumeActiveStream,
   } = useCopilotStore()
@@ -123,6 +124,7 @@ export const Copilot = forwardRef<CopilotRef, CopilotProps>(({ panelWidth }, ref
     chatsLoadedForWorkflow,
     setCopilotWorkflowId,
     loadChats,
+    loadAvailableModels,
     loadAutoAllowedTools,
     currentChat,
     isSendingMessage,
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/hooks/use-copilot-initialization.ts b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/hooks/use-copilot-initialization.ts
index 1ffe80216a..d82c4a83bc 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/hooks/use-copilot-initialization.ts
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/hooks/use-copilot-initialization.ts
@@ -11,6 +11,7 @@ interface UseCopilotInitializationProps {
   chatsLoadedForWorkflow: string | null
   setCopilotWorkflowId: (workflowId: string | null) => Promise<void>
   loadChats: (forceRefresh?: boolean) => Promise<void>
+  loadAvailableModels: () => Promise<void>
   loadAutoAllowedTools: () => Promise<void>
   currentChat: any
   isSendingMessage: boolean
@@ -30,6 +31,7 @@ export function useCopilotInitialization(props: UseCopilotInitializationProps) {
     chatsLoadedForWorkflow,
     setCopilotWorkflowId,
     loadChats,
+    loadAvailableModels,
     loadAutoAllowedTools,
     currentChat,
     isSendingMessage,
@@ -129,6 +131,17 @@ export function useCopilotInitialization(props: UseCopilotInitializationProps) {
     }
   }, [loadAutoAllowedTools])
 
+  /** Load available models once on mount */
+  const hasLoadedModelsRef = useRef(false)
+  useEffect(() => {
+    if (!hasLoadedModelsRef.current) {
+      hasLoadedModelsRef.current = true
+      loadAvailableModels().catch((err) => {
+        logger.warn('[Copilot] Failed to load available models', err)
+      })
+    }
+  }, [loadAvailableModels])
+
   return {
     isInitialized,
   }
diff --git a/apps/sim/lib/copilot/chat-payload.ts b/apps/sim/lib/copilot/chat-payload.ts
index 54763ee028..c4d92dae0c 100644
--- a/apps/sim/lib/copilot/chat-payload.ts
+++ b/apps/sim/lib/copilot/chat-payload.ts
@@ -1,10 +1,7 @@
 import { createLogger } from '@sim/logger'
 import { processFileAttachments } from '@/lib/copilot/chat-context'
-import { getCopilotModel } from '@/lib/copilot/config'
 import { SIM_AGENT_VERSION } from '@/lib/copilot/constants'
 import { getCredentialsServerTool } from '@/lib/copilot/tools/server/user/get-credentials'
-import type { CopilotProviderConfig } from '@/lib/copilot/types'
-import { env } from '@/lib/core/config/env'
 import { tools } from '@/tools/registry'
 import { getLatestVersionTools, stripVersionSuffix } from '@/tools/utils'
 
@@ -46,57 +43,12 @@ interface CredentialsPayload {
   }
 }
 
-function buildProviderConfig(selectedModel: string): CopilotProviderConfig | undefined {
-  const defaults = getCopilotModel('chat')
-  const envModel = env.COPILOT_MODEL || defaults.model
-  const providerEnv = env.COPILOT_PROVIDER
-
-  if (!providerEnv) return undefined
-
-  if (providerEnv === 'azure-openai') {
-    return {
-      provider: 'azure-openai',
-      model: envModel,
-      apiKey: env.AZURE_OPENAI_API_KEY,
-      apiVersion: 'preview',
-      endpoint: env.AZURE_OPENAI_ENDPOINT,
-    }
-  }
-
-  if (providerEnv === 'azure-anthropic') {
-    return {
-      provider: 'azure-anthropic',
-      model: envModel,
-      apiKey: env.AZURE_ANTHROPIC_API_KEY,
-      apiVersion: env.AZURE_ANTHROPIC_API_VERSION,
-      endpoint: env.AZURE_ANTHROPIC_ENDPOINT,
-    }
-  }
-
-  if (providerEnv === 'vertex') {
-    return {
-      provider: 'vertex',
-      model: envModel,
-      apiKey: env.COPILOT_API_KEY,
-      vertexProject: env.VERTEX_PROJECT,
-      vertexLocation: env.VERTEX_LOCATION,
-    }
-  }
-
-  return {
-    provider: providerEnv as Exclude<string, 'azure-openai' | 'vertex'>,
-    model: selectedModel,
-    apiKey: env.COPILOT_API_KEY,
-  } as CopilotProviderConfig
-}
-
 /**
  * Build the request payload for the copilot backend.
  */
 export async function buildCopilotRequestPayload(
   params: BuildPayloadParams,
   options: {
-    providerConfig?: CopilotProviderConfig
     selectedModel: string
   }
 ): Promise<Record<string, unknown>> {
@@ -113,7 +65,6 @@ export async function buildCopilotRequestPayload(
   } = params
 
   const selectedModel = options.selectedModel
-  const providerConfig = options.providerConfig ?? buildProviderConfig(selectedModel)
 
   const effectiveMode = mode === 'agent' ? 'build' : mode
   const transportMode = effectiveMode === 'build' ? 'agent' : effectiveMode
@@ -198,7 +149,6 @@ export async function buildCopilotRequestPayload(
     mode: transportMode,
     messageId: userMessageId,
     version: SIM_AGENT_VERSION,
-    ...(providerConfig ? { provider: providerConfig } : {}),
     ...(contexts && contexts.length > 0 ? { context: contexts } : {}),
     ...(chatId ? { chatId } : {}),
     ...(processedFileContents.length > 0 ? { fileAttachments: processedFileContents } : {}),
diff --git a/apps/sim/lib/copilot/constants.ts b/apps/sim/lib/copilot/constants.ts
index f95ec48b3d..4bdc08f430 100644
--- a/apps/sim/lib/copilot/constants.ts
+++ b/apps/sim/lib/copilot/constants.ts
@@ -104,6 +104,9 @@ export const COPILOT_CHECKPOINTS_REVERT_API_PATH = '/api/copilot/checkpoints/rev
 /** GET/POST/DELETE — manage auto-allowed tools. */
 export const COPILOT_AUTO_ALLOWED_TOOLS_API_PATH = '/api/copilot/auto-allowed-tools'
 
+/** GET — fetch dynamically available copilot models. */
+export const COPILOT_MODELS_API_PATH = '/api/copilot/models'
+
 /** GET — fetch user credentials for masking. */
 export const COPILOT_CREDENTIALS_API_PATH = '/api/copilot/credentials'
 
diff --git a/apps/sim/lib/copilot/models.ts b/apps/sim/lib/copilot/models.ts
index 90d43f1b08..96b03e660f 100644
--- a/apps/sim/lib/copilot/models.ts
+++ b/apps/sim/lib/copilot/models.ts
@@ -24,7 +24,7 @@ export const COPILOT_MODEL_IDS = [
   'gemini-3-pro',
 ] as const
 
-export type CopilotModelId = (typeof COPILOT_MODEL_IDS)[number]
+export type CopilotModelId = string
 
 export const COPILOT_MODES = ['ask', 'build', 'plan'] as const
 export type CopilotMode = (typeof COPILOT_MODES)[number]
diff --git a/apps/sim/lib/copilot/types.ts b/apps/sim/lib/copilot/types.ts
index b9742f335b..302f550649 100644
--- a/apps/sim/lib/copilot/types.ts
+++ b/apps/sim/lib/copilot/types.ts
@@ -11,6 +11,12 @@ export type NotificationStatus =
 
 export type { CopilotToolCall, ToolState }
 
+export interface AvailableModel {
+  id: string
+  friendlyName: string
+  provider: string
+}
+
 // Provider configuration for Sim Agent requests.
 // This type is only for the `provider` field in requests sent to the Sim Agent.
 export type CopilotProviderConfig =
diff --git a/apps/sim/stores/panel/copilot/store.ts b/apps/sim/stores/panel/copilot/store.ts
index 1dd8540ee0..01f81fb6d2 100644
--- a/apps/sim/stores/panel/copilot/store.ts
+++ b/apps/sim/stores/panel/copilot/store.ts
@@ -26,6 +26,7 @@ import {
   COPILOT_CONFIRM_API_PATH,
   COPILOT_CREDENTIALS_API_PATH,
   COPILOT_DELETE_CHAT_API_PATH,
+  COPILOT_MODELS_API_PATH,
   MAX_RESUME_ATTEMPTS,
   OPTIMISTIC_TITLE_MAX_LENGTH,
   QUEUE_PROCESS_DELAY_MS,
@@ -41,6 +42,7 @@ import {
   saveMessageCheckpoint,
 } from '@/lib/copilot/messages'
 import type { CopilotTransportMode } from '@/lib/copilot/models'
+import type { AvailableModel } from '@/lib/copilot/types'
 import { parseSSEStream } from '@/lib/copilot/orchestrator/sse-parser'
 import {
   abortAllInProgressTools,
@@ -913,6 +915,8 @@ const initialState = {
   selectedModel: 'claude-4.6-opus' as CopilotStore['selectedModel'],
   agentPrefetch: false,
   enabledModels: null as string[] | null, // Null means not loaded yet, empty array means all disabled
+  availableModels: [] as AvailableModel[],
+  isLoadingModels: false,
   isCollapsed: false,
   currentChat: null as CopilotChat | null,
   chats: [] as CopilotChat[],
@@ -979,6 +983,8 @@ export const useCopilotStore = create<CopilotStore>()(
         selectedModel: get().selectedModel,
         agentPrefetch: get().agentPrefetch,
         enabledModels: get().enabledModels,
+        availableModels: get().availableModels,
+        isLoadingModels: get().isLoadingModels,
         autoAllowedTools: get().autoAllowedTools,
         autoAllowedToolsLoaded: get().autoAllowedToolsLoaded,
       })
@@ -2191,6 +2197,49 @@ export const useCopilotStore = create<CopilotStore>()(
     },
     setAgentPrefetch: (prefetch) => set({ agentPrefetch: prefetch }),
     setEnabledModels: (models) => set({ enabledModels: models }),
+    loadAvailableModels: async () => {
+      set({ isLoadingModels: true })
+      try {
+        const response = await fetch(COPILOT_MODELS_API_PATH, { method: 'GET' })
+        if (!response.ok) {
+          throw new Error(`Failed to fetch available models: ${response.status}`)
+        }
+
+        const data = await response.json()
+        const models: unknown[] = Array.isArray(data?.models) ? data.models : []
+
+        const normalizedModels: AvailableModel[] = models
+          .filter((model: unknown): model is AvailableModel => {
+            return (
+              typeof model === 'object' &&
+              model !== null &&
+              'id' in model &&
+              typeof (model as { id: unknown }).id === 'string'
+            )
+          })
+          .map((model: AvailableModel) => ({
+            id: model.id,
+            friendlyName: model.friendlyName || model.id,
+            provider: model.provider || 'unknown',
+          }))
+
+        const { selectedModel } = get()
+        const selectedModelExists = normalizedModels.some((model) => model.id === selectedModel)
+        const nextSelectedModel =
+          selectedModelExists || normalizedModels.length === 0 ? selectedModel : normalizedModels[0].id
+
+        set({
+          availableModels: normalizedModels,
+          selectedModel: nextSelectedModel as CopilotStore['selectedModel'],
+          isLoadingModels: false,
+        })
+      } catch (error) {
+        logger.warn('[Copilot] Failed to load available models', {
+          error: error instanceof Error ? error.message : String(error),
+        })
+        set({ isLoadingModels: false })
+      }
+    },
 
     loadAutoAllowedTools: async () => {
       try {
diff --git a/apps/sim/stores/panel/copilot/types.ts b/apps/sim/stores/panel/copilot/types.ts
index 06b7532321..451523711a 100644
--- a/apps/sim/stores/panel/copilot/types.ts
+++ b/apps/sim/stores/panel/copilot/types.ts
@@ -1,4 +1,5 @@
 import type { CopilotMode, CopilotModelId } from '@/lib/copilot/models'
+import type { AvailableModel } from '@/lib/copilot/types'
 
 export type { CopilotMode, CopilotModelId } from '@/lib/copilot/models'
 
@@ -116,6 +117,8 @@ export interface CopilotState {
   selectedModel: CopilotModelId
   agentPrefetch: boolean
   enabledModels: string[] | null // Null means not loaded yet, array of model IDs when loaded
+  availableModels: AvailableModel[]
+  isLoadingModels: boolean
   isCollapsed: boolean
 
   currentChat: CopilotChat | null
@@ -184,6 +187,7 @@ export interface CopilotActions {
   setSelectedModel: (model: CopilotStore['selectedModel']) => Promise<void>
   setAgentPrefetch: (prefetch: boolean) => void
   setEnabledModels: (models: string[] | null) => void
+  loadAvailableModels: () => Promise<void>
 
   setWorkflowId: (workflowId: string | null) => Promise<void>
   validateCurrentChat: () => boolean

From f959d787414d2581215f1aaad0244eaad9f765d7 Mon Sep 17 00:00:00 2001
From: Siddharth Ganesan <siddharthganesan@gmail.com>
Date: Tue, 10 Feb 2026 11:53:08 -0800
Subject: [PATCH 2/9] Fix azure anthropic

---
 apps/sim/app/api/copilot/chat/route.ts | 3 ++-
 apps/sim/lib/copilot/api.ts            | 1 +
 apps/sim/lib/copilot/chat-payload.ts   | 3 +++
 apps/sim/stores/panel/copilot/store.ts | 9 +++++++++
 4 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/apps/sim/app/api/copilot/chat/route.ts b/apps/sim/app/api/copilot/chat/route.ts
index 3fca3e32a8..51568ed5f9 100644
--- a/apps/sim/app/api/copilot/chat/route.ts
+++ b/apps/sim/app/api/copilot/chat/route.ts
@@ -50,7 +50,7 @@ const ChatMessageSchema = z.object({
   stream: z.boolean().optional().default(true),
   implicitFeedback: z.string().optional(),
   fileAttachments: z.array(FileAttachmentSchema).optional(),
-  provider: z.string().optional().default('openai'),
+  provider: z.string().optional(),
   conversationId: z.string().optional(),
   contexts: z
     .array(
@@ -205,6 +205,7 @@ export async function POST(req: NextRequest) {
         userMessageId: userMessageIdToUse,
         mode,
         model: selectedModel,
+        provider,
         conversationHistory,
         contexts: agentContexts,
         fileAttachments,
diff --git a/apps/sim/lib/copilot/api.ts b/apps/sim/lib/copilot/api.ts
index 06ac46b324..dd1bd8a0db 100644
--- a/apps/sim/lib/copilot/api.ts
+++ b/apps/sim/lib/copilot/api.ts
@@ -69,6 +69,7 @@ export interface SendMessageRequest {
   workflowId?: string
   mode?: CopilotMode | CopilotTransportMode
   model?: CopilotModelId
+  provider?: string
   prefetch?: boolean
   createNewChat?: boolean
   stream?: boolean
diff --git a/apps/sim/lib/copilot/chat-payload.ts b/apps/sim/lib/copilot/chat-payload.ts
index c4d92dae0c..110dbfbc79 100644
--- a/apps/sim/lib/copilot/chat-payload.ts
+++ b/apps/sim/lib/copilot/chat-payload.ts
@@ -14,6 +14,7 @@ export interface BuildPayloadParams {
   userMessageId: string
   mode: string
   model: string
+  provider?: string
   conversationHistory?: unknown[]
   contexts?: Array<{ type: string; content: string }>
   fileAttachments?: Array<{ id: string; key: string; size: number; [key: string]: unknown }>
@@ -58,6 +59,7 @@ export async function buildCopilotRequestPayload(
     userId,
     userMessageId,
     mode,
+    provider,
     contexts,
     fileAttachments,
     commands,
@@ -146,6 +148,7 @@ export async function buildCopilotRequestPayload(
     workflowId,
     userId,
     model: selectedModel,
+    ...(provider ? { provider } : {}),
     mode: transportMode,
     messageId: userMessageId,
     version: SIM_AGENT_VERSION,
diff --git a/apps/sim/stores/panel/copilot/store.ts b/apps/sim/stores/panel/copilot/store.ts
index 01f81fb6d2..d8684410d8 100644
--- a/apps/sim/stores/panel/copilot/store.ts
+++ b/apps/sim/stores/panel/copilot/store.ts
@@ -299,6 +299,12 @@ type InitiateStreamResult =
   | { kind: 'success'; result: Awaited<ReturnType<typeof sendStreamingMessage>> }
   | { kind: 'error'; error: unknown }
 
+/** Look up the provider for the currently selected model from the available models list. */
+function getSelectedProvider(get: CopilotGet): string | undefined {
+  const selectedModel = get().selectedModel
+  return get().availableModels.find((m) => m.id === selectedModel)?.provider
+}
+
 function prepareSendContext(
   get: CopilotGet,
   set: CopilotSet,
@@ -489,6 +495,7 @@ async function initiateStream(
       workflowId: prepared.workflowId || undefined,
       mode: apiMode,
       model: get().selectedModel,
+      provider: getSelectedProvider(get),
       prefetch: get().agentPrefetch,
       createNewChat: !prepared.currentChat,
       stream: prepared.stream,
@@ -866,6 +873,7 @@ async function resumeFromLiveStream(
       chatId: resume.nextStream.chatId || get().currentChat?.id || undefined,
       mode: get().mode === 'ask' ? 'ask' : get().mode === 'plan' ? 'plan' : 'agent',
       model: get().selectedModel,
+      provider: getSelectedProvider(get),
       prefetch: get().agentPrefetch,
       stream: true,
       resumeFromEventId: resume.resumeFromEventId,
@@ -1437,6 +1445,7 @@ export const useCopilotStore = create<CopilotStore>()(
           workflowId,
           mode: apiMode,
           model: selectedModel,
+          provider: getSelectedProvider(get),
           prefetch: get().agentPrefetch,
           createNewChat: !currentChat,
           stream: true,

From 81bf1e1650ebab5f9cc24387f2af767cb1add8c5 Mon Sep 17 00:00:00 2001
From: Siddharth Ganesan <siddharthganesan@gmail.com>
Date: Tue, 10 Feb 2026 12:50:04 -0800
Subject: [PATCH 3/9] Fix

---
 .../model-selector/model-selector.tsx         | 11 ++-
 apps/sim/stores/panel/copilot/store.ts        | 68 ++++++++++++++-----
 2 files changed, 59 insertions(+), 20 deletions(-)

diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx
index 5eaf1af698..0a10215c3e 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx
@@ -67,9 +67,14 @@ export function ModelSelector({ selectedModel, isNearTop, onModelSelect }: Model
     }))
   }, [availableModels])
 
-  /** Look up the provider for a model id from the available-models list */
-  const getProviderForModel = (modelId: string): string | undefined => {
-    return availableModels.find((m) => m.id === modelId)?.provider
+  /**
+   * Extract the provider from a composite model key (e.g. "bedrock/claude-opus-4-6" → "bedrock").
+   * This mirrors the agent block pattern where model IDs are provider-prefixed.
+   */
+  const getProviderForModel = (compositeKey: string): string | undefined => {
+    const slashIdx = compositeKey.indexOf('/')
+    if (slashIdx === -1) return undefined
+    return compositeKey.slice(0, slashIdx)
   }
 
   const getCollapsedModeLabel = () => {
diff --git a/apps/sim/stores/panel/copilot/store.ts b/apps/sim/stores/panel/copilot/store.ts
index d8684410d8..379fb7002c 100644
--- a/apps/sim/stores/panel/copilot/store.ts
+++ b/apps/sim/stores/panel/copilot/store.ts
@@ -299,10 +299,21 @@ type InitiateStreamResult =
   | { kind: 'success'; result: Awaited<ReturnType<typeof sendStreamingMessage>> }
   | { kind: 'error'; error: unknown }
 
-/** Look up the provider for the currently selected model from the available models list. */
+/**
+ * Parse a composite model key (e.g. "bedrock/claude-opus-4-6") into provider and raw model ID.
+ * This mirrors the agent block pattern in providers/models.ts where model IDs are prefixed
+ * with the provider (e.g. "azure-anthropic/claude-sonnet-4-5", "bedrock/claude-opus-4-6").
+ */
+function parseModelKey(compositeKey: string): { provider: string; modelId: string } {
+  const slashIdx = compositeKey.indexOf('/')
+  if (slashIdx === -1) return { provider: '', modelId: compositeKey }
+  return { provider: compositeKey.slice(0, slashIdx), modelId: compositeKey.slice(slashIdx + 1) }
+}
+
+/** Look up the provider for the currently selected model from the composite key. */
 function getSelectedProvider(get: CopilotGet): string | undefined {
-  const selectedModel = get().selectedModel
-  return get().availableModels.find((m) => m.id === selectedModel)?.provider
+  const { provider } = parseModelKey(get().selectedModel)
+  return provider || undefined
 }
 
 function prepareSendContext(
@@ -488,14 +499,17 @@ async function initiateStream(
       }) as string[] | undefined
     const filteredContexts = contexts?.filter((c) => c.kind !== 'slash_command')
 
+    const { provider: selectedProvider, modelId: selectedModelId } = parseModelKey(
+      get().selectedModel
+    )
     const result = await sendStreamingMessage({
       message: messageToSend,
       userMessageId: prepared.userMessage.id,
       chatId: prepared.currentChat?.id,
       workflowId: prepared.workflowId || undefined,
       mode: apiMode,
-      model: get().selectedModel,
-      provider: getSelectedProvider(get),
+      model: selectedModelId,
+      provider: selectedProvider || undefined,
       prefetch: get().agentPrefetch,
       createNewChat: !prepared.currentChat,
       stream: prepared.stream,
@@ -866,14 +880,15 @@ async function resumeFromLiveStream(
       assistantMessageId: resume.nextStream.assistantMessageId,
       chatId: resume.nextStream.chatId,
     })
+    const { provider: resumeProvider, modelId: resumeModelId } = parseModelKey(get().selectedModel)
     const result = await sendStreamingMessage({
       message: resume.nextStream.userMessageContent || '',
       userMessageId: resume.nextStream.userMessageId,
       workflowId: resume.nextStream.workflowId,
       chatId: resume.nextStream.chatId || get().currentChat?.id || undefined,
       mode: get().mode === 'ask' ? 'ask' : get().mode === 'plan' ? 'plan' : 'agent',
-      model: get().selectedModel,
-      provider: getSelectedProvider(get),
+      model: resumeModelId,
+      provider: resumeProvider || undefined,
       prefetch: get().agentPrefetch,
       stream: true,
       resumeFromEventId: resume.resumeFromEventId,
@@ -920,7 +935,7 @@ const cachedAutoAllowedTools = readAutoAllowedToolsFromStorage()
 // Initial state (subset required for UI/streaming)
 const initialState = {
   mode: 'build' as const,
-  selectedModel: 'claude-4.6-opus' as CopilotStore['selectedModel'],
+  selectedModel: 'anthropic/claude-opus-4-6' as CopilotStore['selectedModel'],
   agentPrefetch: false,
   enabledModels: null as string[] | null, // Null means not loaded yet, empty array means all disabled
   availableModels: [] as AvailableModel[],
@@ -1439,13 +1454,14 @@ export const useCopilotStore = create<CopilotStore>()(
       try {
         const apiMode: 'ask' | 'agent' | 'plan' =
           mode === 'ask' ? 'ask' : mode === 'plan' ? 'plan' : 'agent'
+        const { provider: fbProvider, modelId: fbModelId } = parseModelKey(selectedModel)
         const result = await sendStreamingMessage({
           message: 'Please continue your response.',
           chatId: currentChat?.id,
           workflowId,
           mode: apiMode,
-          model: selectedModel,
-          provider: getSelectedProvider(get),
+          model: fbModelId,
+          provider: fbProvider || undefined,
           prefetch: get().agentPrefetch,
           createNewChat: !currentChat,
           stream: true,
@@ -2226,16 +2242,34 @@ export const useCopilotStore = create<CopilotStore>()(
               typeof (model as { id: unknown }).id === 'string'
             )
           })
-          .map((model: AvailableModel) => ({
-            id: model.id,
-            friendlyName: model.friendlyName || model.id,
-            provider: model.provider || 'unknown',
-          }))
+          .map((model: AvailableModel) => {
+            const provider = model.provider || 'unknown'
+            // Use composite provider/modelId keys (matching agent block pattern in providers/models.ts)
+            // so models with the same raw ID from different providers are uniquely identified.
+            const compositeId = provider ? `${provider}/${model.id}` : model.id
+            return {
+              id: compositeId,
+              friendlyName: model.friendlyName || model.id,
+              provider,
+            }
+          })
 
         const { selectedModel } = get()
         const selectedModelExists = normalizedModels.some((model) => model.id === selectedModel)
-        const nextSelectedModel =
-          selectedModelExists || normalizedModels.length === 0 ? selectedModel : normalizedModels[0].id
+
+        // Pick the best default: prefer claude-opus-4-6 with provider priority:
+        // direct anthropic > bedrock > azure-anthropic > any other.
+        let nextSelectedModel = selectedModel
+        if (!selectedModelExists && normalizedModels.length > 0) {
+          const providerPriority = ['anthropic', 'bedrock', 'azure-anthropic']
+          let opus46: AvailableModel | undefined
+          for (const prov of providerPriority) {
+            opus46 = normalizedModels.find((m) => m.id === `${prov}/claude-opus-4-6`)
+            if (opus46) break
+          }
+          if (!opus46) opus46 = normalizedModels.find((m) => m.id.endsWith('/claude-opus-4-6'))
+          nextSelectedModel = opus46 ? opus46.id : normalizedModels[0].id
+        }
 
         set({
           availableModels: normalizedModels,

From 8dbec38a248463944dcc461481c33068c00962a4 Mon Sep 17 00:00:00 2001
From: Siddharth Ganesan <siddharthganesan@gmail.com>
Date: Tue, 10 Feb 2026 13:13:42 -0800
Subject: [PATCH 4/9] Consolidation

---
 apps/sim/app/api/copilot/chat/route.ts        | 19 ++---
 apps/sim/app/api/copilot/models/route.ts      | 22 +++++-
 apps/sim/app/api/copilot/user-models/route.ts | 26 ++-----
 apps/sim/lib/copilot/chat-title.ts            | 78 +++++++------------
 apps/sim/lib/copilot/config.ts                | 48 ------------
 apps/sim/lib/copilot/models.ts                | 26 -------
 apps/sim/lib/copilot/orchestrator/types.ts    |  4 +-
 apps/sim/lib/copilot/types.ts                 | 31 --------
 apps/sim/lib/core/config/env.ts               |  2 -
 apps/sim/stores/panel/copilot/store.ts        |  6 +-
 10 files changed, 63 insertions(+), 199 deletions(-)

diff --git a/apps/sim/app/api/copilot/chat/route.ts b/apps/sim/app/api/copilot/chat/route.ts
index 51568ed5f9..8a780ed474 100644
--- a/apps/sim/app/api/copilot/chat/route.ts
+++ b/apps/sim/app/api/copilot/chat/route.ts
@@ -9,7 +9,6 @@ import { buildConversationHistory } from '@/lib/copilot/chat-context'
 import { resolveOrCreateChat } from '@/lib/copilot/chat-lifecycle'
 import { buildCopilotRequestPayload } from '@/lib/copilot/chat-payload'
 import { generateChatTitle } from '@/lib/copilot/chat-title'
-import { getCopilotModel } from '@/lib/copilot/config'
 import { COPILOT_REQUEST_MODES } from '@/lib/copilot/models'
 import { orchestrateCopilotStream } from '@/lib/copilot/orchestrator'
 import {
@@ -24,7 +23,6 @@ import {
   createRequestTracker,
   createUnauthorizedResponse,
 } from '@/lib/copilot/request-helpers'
-import { env } from '@/lib/core/config/env'
 import { resolveWorkflowIdForUser } from '@/lib/workflows/utils'
 
 const logger = createLogger('CopilotChatAPI')
@@ -43,7 +41,7 @@ const ChatMessageSchema = z.object({
   chatId: z.string().optional(),
   workflowId: z.string().optional(),
   workflowName: z.string().optional(),
-  model: z.string().optional().default('claude-4.6-opus'),
+  model: z.string().optional().default('claude-opus-4-6'),
   mode: z.enum(COPILOT_REQUEST_MODES).optional().default('agent'),
   prefetch: z.boolean().optional(),
   createNewChat: z.boolean().optional().default(false),
@@ -173,14 +171,14 @@ export async function POST(req: NextRequest) {
     let currentChat: any = null
     let conversationHistory: any[] = []
     let actualChatId = chatId
+    const selectedModel = model || 'claude-opus-4-6'
 
     if (chatId || createNewChat) {
-      const defaultsForChatRow = getCopilotModel('chat')
       const chatResult = await resolveOrCreateChat({
         chatId,
         userId: authenticatedUserId,
         workflowId,
-        model: defaultsForChatRow.model,
+        model: selectedModel,
       })
       currentChat = chatResult.chat
       actualChatId = chatResult.chatId || chatId
@@ -191,8 +189,6 @@ export async function POST(req: NextRequest) {
       conversationHistory = history.history
     }
 
-    const defaults = getCopilotModel('chat')
-    const selectedModel = model || defaults.model
     const effectiveMode = mode === 'agent' ? 'build' : mode
     const effectiveConversationId =
       (currentChat?.conversationId as string | undefined) || conversationId
@@ -284,7 +280,7 @@ export async function POST(req: NextRequest) {
           }
 
           if (actualChatId && !currentChat?.title && conversationHistory.length === 0) {
-            generateChatTitle(message)
+            generateChatTitle({ message, model: selectedModel, provider })
               .then(async (title) => {
                 if (title) {
                   await db
@@ -373,10 +369,7 @@ export async function POST(req: NextRequest) {
       content: nonStreamingResult.content,
       toolCalls: nonStreamingResult.toolCalls,
       model: selectedModel,
-      provider:
-        (requestPayload?.provider as Record<string, unknown>)?.provider ||
-        env.COPILOT_PROVIDER ||
-        'openai',
+      provider: typeof requestPayload?.provider === 'string' ? requestPayload.provider : undefined,
     }
 
     logger.info(`[${tracker.requestId}] Non-streaming response from orchestrator:`, {
@@ -414,7 +407,7 @@ export async function POST(req: NextRequest) {
       // Start title generation in parallel if this is first message (non-streaming)
       if (actualChatId && !currentChat.title && conversationHistory.length === 0) {
         logger.info(`[${tracker.requestId}] Starting title generation for non-streaming response`)
-        generateChatTitle(message)
+        generateChatTitle({ message, model: selectedModel, provider })
           .then(async (title) => {
             if (title) {
               await db
diff --git a/apps/sim/app/api/copilot/models/route.ts b/apps/sim/app/api/copilot/models/route.ts
index dfd471ff54..d177379745 100644
--- a/apps/sim/app/api/copilot/models/route.ts
+++ b/apps/sim/app/api/copilot/models/route.ts
@@ -2,11 +2,27 @@ import { createLogger } from '@sim/logger'
 import { type NextRequest, NextResponse } from 'next/server'
 import { SIM_AGENT_API_URL } from '@/lib/copilot/constants'
 import { authenticateCopilotRequestSessionOnly } from '@/lib/copilot/request-helpers'
-import { env } from '@/lib/core/config/env'
 import type { AvailableModel } from '@/lib/copilot/types'
+import { env } from '@/lib/core/config/env'
 
 const logger = createLogger('CopilotModelsAPI')
 
+interface RawAvailableModel {
+  id: string
+  friendlyName?: string
+  displayName?: string
+  provider?: string
+}
+
+function isRawAvailableModel(item: unknown): item is RawAvailableModel {
+  return (
+    typeof item === 'object' &&
+    item !== null &&
+    'id' in item &&
+    typeof (item as { id: unknown }).id === 'string'
+  )
+}
+
 export async function GET(_req: NextRequest) {
   const { userId, isAuthenticated } = await authenticateCopilotRequestSessionOnly()
   if (!isAuthenticated || !userId) {
@@ -44,8 +60,8 @@ export async function GET(_req: NextRequest) {
 
     const rawModels = Array.isArray(payload?.models) ? payload.models : []
     const models: AvailableModel[] = rawModels
-      .filter((item: any) => item && typeof item.id === 'string')
-      .map((item: any) => ({
+      .filter((item: unknown): item is RawAvailableModel => isRawAvailableModel(item))
+      .map((item: RawAvailableModel) => ({
         id: item.id,
         friendlyName: item.friendlyName || item.displayName || item.id,
         provider: item.provider || 'unknown',
diff --git a/apps/sim/app/api/copilot/user-models/route.ts b/apps/sim/app/api/copilot/user-models/route.ts
index 86e31c747f..6ead89a41e 100644
--- a/apps/sim/app/api/copilot/user-models/route.ts
+++ b/apps/sim/app/api/copilot/user-models/route.ts
@@ -9,28 +9,12 @@ import { settings } from '@/../../packages/db/schema'
 const logger = createLogger('CopilotUserModelsAPI')
 
 const DEFAULT_ENABLED_MODELS: Record<CopilotModelId, boolean> = {
-  'gpt-4o': false,
-  'gpt-4.1': false,
-  'gpt-5-fast': false,
-  'gpt-5': true,
-  'gpt-5-medium': false,
-  'gpt-5-high': false,
-  'gpt-5.1-fast': false,
-  'gpt-5.1': false,
-  'gpt-5.1-medium': false,
-  'gpt-5.1-high': false,
-  'gpt-5-codex': false,
-  'gpt-5.1-codex': false,
-  'gpt-5.2': false,
+  'claude-opus-4-6': true,
+  'claude-opus-4-5': true,
+  'claude-sonnet-4-5': true,
+  'claude-haiku-4-5': true,
+  'gpt-5.2': true,
   'gpt-5.2-codex': true,
-  'gpt-5.2-pro': true,
-  o3: true,
-  'claude-4-sonnet': false,
-  'claude-4.5-haiku': true,
-  'claude-4.5-sonnet': true,
-  'claude-4.6-opus': true,
-  'claude-4.5-opus': true,
-  'claude-4.1-opus': false,
   'gemini-3-pro': true,
 }
 
diff --git a/apps/sim/lib/copilot/chat-title.ts b/apps/sim/lib/copilot/chat-title.ts
index 10dd882998..6f890338a1 100644
--- a/apps/sim/lib/copilot/chat-title.ts
+++ b/apps/sim/lib/copilot/chat-title.ts
@@ -1,77 +1,57 @@
 import { createLogger } from '@sim/logger'
+import { SIM_AGENT_API_URL } from '@/lib/copilot/constants'
 import { env } from '@/lib/core/config/env'
-import { extractResponseText } from '@/providers/openai/utils'
 
 const logger = createLogger('SimAgentUtils')
 
-const azureApiKey = env.AZURE_OPENAI_API_KEY
-const azureEndpoint = env.AZURE_OPENAI_ENDPOINT
-const azureApiVersion = env.AZURE_OPENAI_API_VERSION
-const chatTitleModelName = env.WAND_OPENAI_MODEL_NAME || 'gpt-4o'
-const openaiApiKey = env.OPENAI_API_KEY
-
-const useChatTitleAzure = azureApiKey && azureEndpoint && azureApiVersion
+interface GenerateChatTitleParams {
+  message: string
+  model: string
+  provider?: string
+}
 
 /**
  * Generates a short title for a chat based on the first message
- * @param message First user message in the chat
- * @returns A short title or null if API key is not available
+ * using the Copilot backend's server-side provider configuration.
  */
-export async function generateChatTitle(message: string): Promise<string | null> {
-  if (!useChatTitleAzure && !openaiApiKey) {
+export async function generateChatTitle({
+  message,
+  model,
+  provider,
+}: GenerateChatTitleParams): Promise<string | null> {
+  if (!message || !model) {
     return null
   }
 
-  try {
-    const apiUrl = useChatTitleAzure
-      ? `${azureEndpoint?.replace(/\/$/, '')}/openai/v1/responses?api-version=${azureApiVersion}`
-      : 'https://api.openai.com/v1/responses'
-
-    const headers: Record<string, string> = {
-      'Content-Type': 'application/json',
-      'OpenAI-Beta': 'responses=v1',
-    }
-
-    if (useChatTitleAzure) {
-      headers['api-key'] = azureApiKey!
-    } else {
-      headers.Authorization = `Bearer ${openaiApiKey}`
-    }
+  const headers: Record<string, string> = {
+    'Content-Type': 'application/json',
+  }
+  if (env.COPILOT_API_KEY) {
+    headers['x-api-key'] = env.COPILOT_API_KEY
+  }
 
-    const response = await fetch(apiUrl, {
+  try {
+    const response = await fetch(`${SIM_AGENT_API_URL}/api/generate-chat-title`, {
       method: 'POST',
       headers,
       body: JSON.stringify({
-        model: useChatTitleAzure ? chatTitleModelName : 'gpt-4o',
-        input: [
-          {
-            role: 'system',
-            content:
-              'Generate a very short title (3-5 words max) for a chat that starts with this message. The title should be concise and descriptive. Do not wrap the title in quotes.',
-          },
-          {
-            role: 'user',
-            content: message,
-          },
-        ],
-        max_output_tokens: 20,
-        temperature: 0.2,
+        message,
+        model,
+        ...(provider ? { provider } : {}),
       }),
     })
 
+    const payload = await response.json().catch(() => ({}))
     if (!response.ok) {
-      const errorText = await response.text()
-      logger.error('Error generating chat title:', {
+      logger.warn('Failed to generate chat title via copilot backend', {
         status: response.status,
-        statusText: response.statusText,
-        error: errorText,
+        error: payload,
       })
       return null
     }
 
-    const data = await response.json()
-    const title = extractResponseText(data.output)?.trim() || null
-    return title
+    const title = typeof payload?.title === 'string' ? payload.title.trim() : ''
+    return title || null
   } catch (error) {
     logger.error('Error generating chat title:', error)
     return null
diff --git a/apps/sim/lib/copilot/config.ts b/apps/sim/lib/copilot/config.ts
index d82a630129..ad2bfb483d 100644
--- a/apps/sim/lib/copilot/config.ts
+++ b/apps/sim/lib/copilot/config.ts
@@ -5,23 +5,6 @@ import type { ProviderId } from '@/providers/types'
 
 const logger = createLogger('CopilotConfig')
 
-/**
- * Valid provider IDs for validation
- */
-const VALID_PROVIDER_IDS: readonly ProviderId[] = [
-  'openai',
-  'azure-openai',
-  'anthropic',
-  'azure-anthropic',
-  'google',
-  'deepseek',
-  'xai',
-  'cerebras',
-  'mistral',
-  'groq',
-  'ollama',
-] as const
-
 /**
  * Configuration validation constraints
  */
@@ -76,11 +59,6 @@ export interface CopilotConfig {
   }
 }
 
-function validateProviderId(value: string | undefined): ProviderId | null {
-  if (!value) return null
-  return VALID_PROVIDER_IDS.includes(value as ProviderId) ? (value as ProviderId) : null
-}
-
 function parseFloatEnv(value: string | undefined, name: string): number | null {
   if (!value) return null
   const parsed = Number.parseFloat(value)
@@ -131,19 +109,6 @@ export const DEFAULT_COPILOT_CONFIG: CopilotConfig = {
 }
 
 function applyEnvironmentOverrides(config: CopilotConfig): void {
-  const chatProvider = validateProviderId(process.env.COPILOT_CHAT_PROVIDER)
-  if (chatProvider) {
-    config.chat.defaultProvider = chatProvider
-  } else if (process.env.COPILOT_CHAT_PROVIDER) {
-    logger.warn(
-      `Invalid COPILOT_CHAT_PROVIDER: ${process.env.COPILOT_CHAT_PROVIDER}. Valid providers: ${VALID_PROVIDER_IDS.join(', ')}`
-    )
-  }
-
-  if (process.env.COPILOT_CHAT_MODEL) {
-    config.chat.defaultModel = process.env.COPILOT_CHAT_MODEL
-  }
-
   const chatTemperature = parseFloatEnv(
     process.env.COPILOT_CHAT_TEMPERATURE,
     'COPILOT_CHAT_TEMPERATURE'
@@ -157,19 +122,6 @@ function applyEnvironmentOverrides(config: CopilotConfig): void {
     config.chat.maxTokens = chatMaxTokens
   }
 
-  const ragProvider = validateProviderId(process.env.COPILOT_RAG_PROVIDER)
-  if (ragProvider) {
-    config.rag.defaultProvider = ragProvider
-  } else if (process.env.COPILOT_RAG_PROVIDER) {
-    logger.warn(
-      `Invalid COPILOT_RAG_PROVIDER: ${process.env.COPILOT_RAG_PROVIDER}. Valid providers: ${VALID_PROVIDER_IDS.join(', ')}`
-    )
-  }
-
-  if (process.env.COPILOT_RAG_MODEL) {
-    config.rag.defaultModel = process.env.COPILOT_RAG_MODEL
-  }
-
   const ragTemperature = parseFloatEnv(
     process.env.COPILOT_RAG_TEMPERATURE,
     'COPILOT_RAG_TEMPERATURE'
diff --git a/apps/sim/lib/copilot/models.ts b/apps/sim/lib/copilot/models.ts
index 96b03e660f..f102de517f 100644
--- a/apps/sim/lib/copilot/models.ts
+++ b/apps/sim/lib/copilot/models.ts
@@ -1,29 +1,3 @@
-export const COPILOT_MODEL_IDS = [
-  'gpt-5-fast',
-  'gpt-5',
-  'gpt-5-medium',
-  'gpt-5-high',
-  'gpt-5.1-fast',
-  'gpt-5.1',
-  'gpt-5.1-medium',
-  'gpt-5.1-high',
-  'gpt-5-codex',
-  'gpt-5.1-codex',
-  'gpt-5.2',
-  'gpt-5.2-codex',
-  'gpt-5.2-pro',
-  'gpt-4o',
-  'gpt-4.1',
-  'o3',
-  'claude-4-sonnet',
-  'claude-4.5-haiku',
-  'claude-4.5-sonnet',
-  'claude-4.6-opus',
-  'claude-4.5-opus',
-  'claude-4.1-opus',
-  'gemini-3-pro',
-] as const
-
 export type CopilotModelId = string
 
 export const COPILOT_MODES = ['ask', 'build', 'plan'] as const
diff --git a/apps/sim/lib/copilot/orchestrator/types.ts b/apps/sim/lib/copilot/orchestrator/types.ts
index eebc806a72..3113a23b53 100644
--- a/apps/sim/lib/copilot/orchestrator/types.ts
+++ b/apps/sim/lib/copilot/orchestrator/types.ts
@@ -1,5 +1,3 @@
-import type { CopilotProviderConfig } from '@/lib/copilot/types'
-
 export type SSEEventType =
   | 'chat_id'
   | 'title_updated'
@@ -104,7 +102,7 @@ export interface OrchestratorRequest {
   contexts?: Array<{ type: string; content: string }>
   fileAttachments?: FileAttachment[]
   commands?: string[]
-  provider?: CopilotProviderConfig
+  provider?: string
   streamToolCalls?: boolean
   version?: string
   prefetch?: boolean
diff --git a/apps/sim/lib/copilot/types.ts b/apps/sim/lib/copilot/types.ts
index 302f550649..79c617f01c 100644
--- a/apps/sim/lib/copilot/types.ts
+++ b/apps/sim/lib/copilot/types.ts
@@ -1,4 +1,3 @@
-import type { ProviderId } from '@/providers/types'
 import type { CopilotToolCall, ToolState } from '@/stores/panel'
 
 export type NotificationStatus =
@@ -16,33 +15,3 @@ export interface AvailableModel {
   friendlyName: string
   provider: string
 }
-
-// Provider configuration for Sim Agent requests.
-// This type is only for the `provider` field in requests sent to the Sim Agent.
-export type CopilotProviderConfig =
-  | {
-      provider: 'azure-openai'
-      model: string
-      apiKey?: string
-      apiVersion?: string
-      endpoint?: string
-    }
-  | {
-      provider: 'azure-anthropic'
-      model: string
-      apiKey?: string
-      apiVersion?: string
-      endpoint?: string
-    }
-  | {
-      provider: 'vertex'
-      model: string
-      apiKey?: string
-      vertexProject?: string
-      vertexLocation?: string
-    }
-  | {
-      provider: Exclude<ProviderId, 'azure-openai' | 'azure-anthropic' | 'vertex'>
-      model?: string
-      apiKey?: string
-    }
diff --git a/apps/sim/lib/core/config/env.ts b/apps/sim/lib/core/config/env.ts
index 0299ade0e2..31c9c36ada 100644
--- a/apps/sim/lib/core/config/env.ts
+++ b/apps/sim/lib/core/config/env.ts
@@ -29,8 +29,6 @@ export const env = createEnv({
     INTERNAL_API_SECRET:                   z.string().min(32),                     // Secret for internal API authentication
 
     // Copilot
-    COPILOT_PROVIDER:                      z.string().optional(),                  // Provider for copilot API calls
-    COPILOT_MODEL:                         z.string().optional(),                  // Model for copilot API calls
     COPILOT_API_KEY:                       z.string().min(1).optional(),           // Secret for internal sim agent API authentication
     SIM_AGENT_API_URL:                     z.string().url().optional(),            // URL for internal sim agent API
     AGENT_INDEXER_URL:                     z.string().url().optional(),            // URL for agent training data indexer
diff --git a/apps/sim/stores/panel/copilot/store.ts b/apps/sim/stores/panel/copilot/store.ts
index 379fb7002c..3eddf5429b 100644
--- a/apps/sim/stores/panel/copilot/store.ts
+++ b/apps/sim/stores/panel/copilot/store.ts
@@ -42,7 +42,6 @@ import {
   saveMessageCheckpoint,
 } from '@/lib/copilot/messages'
 import type { CopilotTransportMode } from '@/lib/copilot/models'
-import type { AvailableModel } from '@/lib/copilot/types'
 import { parseSSEStream } from '@/lib/copilot/orchestrator/sse-parser'
 import {
   abortAllInProgressTools,
@@ -52,6 +51,7 @@ import {
   stripTodoTags,
 } from '@/lib/copilot/store-utils'
 import { ClientToolCallState } from '@/lib/copilot/tools/client/tool-display-registry'
+import type { AvailableModel } from '@/lib/copilot/types'
 import { getQueryClient } from '@/app/_shell/providers/query-provider'
 import { subscriptionKeys } from '@/hooks/queries/subscription'
 import type {
@@ -577,7 +577,7 @@ async function finalizeStream(
       errorType = 'usage_limit'
     } else if (result.status === 403) {
       errorContent =
-        '_Provider config not allowed for non-enterprise users. Please remove the provider config and try again_'
+        '_Access denied by the Copilot backend. Please verify your API key and server configuration._'
       errorType = 'forbidden'
     } else if (result.status === 426) {
       errorContent =
@@ -2246,7 +2246,7 @@ export const useCopilotStore = create<CopilotStore>()(
             const provider = model.provider || 'unknown'
             // Use composite provider/modelId keys (matching agent block pattern in providers/models.ts)
             // so models with the same raw ID from different providers are uniquely identified.
-            const compositeId = provider ? `${provider}/${model.id}` : model.id
+            const compositeId = `${provider}/${model.id}`
             return {
               id: compositeId,
               friendlyName: model.friendlyName || model.id,

From 579368118989a2c47e8316180d4a8743e81886bb Mon Sep 17 00:00:00 2001
From: Siddharth Ganesan <siddharthganesan@gmail.com>
Date: Tue, 10 Feb 2026 13:20:17 -0800
Subject: [PATCH 5/9] Cleanup

---
 apps/sim/app/api/copilot/user-models/route.ts | 123 ------------------
 apps/sim/stores/panel/copilot/store.ts        |   3 -
 apps/sim/stores/panel/copilot/types.ts        |   2 -
 3 files changed, 128 deletions(-)
 delete mode 100644 apps/sim/app/api/copilot/user-models/route.ts

diff --git a/apps/sim/app/api/copilot/user-models/route.ts b/apps/sim/app/api/copilot/user-models/route.ts
deleted file mode 100644
index 6ead89a41e..0000000000
--- a/apps/sim/app/api/copilot/user-models/route.ts
+++ /dev/null
@@ -1,123 +0,0 @@
-import { createLogger } from '@sim/logger'
-import { eq } from 'drizzle-orm'
-import { type NextRequest, NextResponse } from 'next/server'
-import { getSession } from '@/lib/auth'
-import type { CopilotModelId } from '@/lib/copilot/models'
-import { db } from '@/../../packages/db'
-import { settings } from '@/../../packages/db/schema'
-
-const logger = createLogger('CopilotUserModelsAPI')
-
-const DEFAULT_ENABLED_MODELS: Record<CopilotModelId, boolean> = {
-  'claude-opus-4-6': true,
-  'claude-opus-4-5': true,
-  'claude-sonnet-4-5': true,
-  'claude-haiku-4-5': true,
-  'gpt-5.2': true,
-  'gpt-5.2-codex': true,
-  'gemini-3-pro': true,
-}
-
-// GET - Fetch user's enabled models
-export async function GET(request: NextRequest) {
-  try {
-    const session = await getSession()
-
-    if (!session?.user?.id) {
-      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
-    }
-
-    const userId = session.user.id
-
-    const [userSettings] = await db
-      .select()
-      .from(settings)
-      .where(eq(settings.userId, userId))
-      .limit(1)
-
-    if (userSettings) {
-      const userModelsMap = (userSettings.copilotEnabledModels as Record<string, boolean>) || {}
-
-      const mergedModels = { ...DEFAULT_ENABLED_MODELS }
-      for (const [modelId, enabled] of Object.entries(userModelsMap)) {
-        if (modelId in mergedModels) {
-          mergedModels[modelId as CopilotModelId] = enabled
-        }
-      }
-
-      const hasNewModels = Object.keys(DEFAULT_ENABLED_MODELS).some(
-        (key) => !(key in userModelsMap)
-      )
-
-      if (hasNewModels) {
-        await db
-          .update(settings)
-          .set({
-            copilotEnabledModels: mergedModels,
-            updatedAt: new Date(),
-          })
-          .where(eq(settings.userId, userId))
-      }
-
-      return NextResponse.json({
-        enabledModels: mergedModels,
-      })
-    }
-
-    await db.insert(settings).values({
-      id: userId,
-      userId,
-      copilotEnabledModels: DEFAULT_ENABLED_MODELS,
-    })
-
-    logger.info('Created new settings record with default models', { userId })
-
-    return NextResponse.json({
-      enabledModels: DEFAULT_ENABLED_MODELS,
-    })
-  } catch (error) {
-    logger.error('Failed to fetch user models', { error })
-    return NextResponse.json({ error: 'Internal server error' }, { status: 500 })
-  }
-}
-
-// PUT - Update user's enabled models
-export async function PUT(request: NextRequest) {
-  try {
-    const session = await getSession()
-
-    if (!session?.user?.id) {
-      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
-    }
-
-    const userId = session.user.id
-    const body = await request.json()
-
-    if (!body.enabledModels || typeof body.enabledModels !== 'object') {
-      return NextResponse.json({ error: 'enabledModels must be an object' }, { status: 400 })
-    }
-
-    const [existing] = await db.select().from(settings).where(eq(settings.userId, userId)).limit(1)
-
-    if (existing) {
-      await db
-        .update(settings)
-        .set({
-          copilotEnabledModels: body.enabledModels,
-          updatedAt: new Date(),
-        })
-        .where(eq(settings.userId, userId))
-    } else {
-      await db.insert(settings).values({
-        id: userId,
-        userId,
-        copilotEnabledModels: body.enabledModels,
-      })
-    }
-
-    return NextResponse.json({ success: true })
-  } catch (error) {
-    logger.error('Failed to update user models', { error })
-    return NextResponse.json({ error: 'Internal server error' }, { status: 500 })
-  }
-}
diff --git a/apps/sim/stores/panel/copilot/store.ts b/apps/sim/stores/panel/copilot/store.ts
index 3eddf5429b..4ef492b942 100644
--- a/apps/sim/stores/panel/copilot/store.ts
+++ b/apps/sim/stores/panel/copilot/store.ts
@@ -937,7 +937,6 @@ const initialState = {
   mode: 'build' as const,
   selectedModel: 'anthropic/claude-opus-4-6' as CopilotStore['selectedModel'],
   agentPrefetch: false,
-  enabledModels: null as string[] | null, // Null means not loaded yet, empty array means all disabled
   availableModels: [] as AvailableModel[],
   isLoadingModels: false,
   isCollapsed: false,
@@ -1005,7 +1004,6 @@ export const useCopilotStore = create<CopilotStore>()(
         mode: get().mode,
         selectedModel: get().selectedModel,
         agentPrefetch: get().agentPrefetch,
-        enabledModels: get().enabledModels,
         availableModels: get().availableModels,
         isLoadingModels: get().isLoadingModels,
         autoAllowedTools: get().autoAllowedTools,
@@ -2221,7 +2219,6 @@ export const useCopilotStore = create<CopilotStore>()(
       set({ selectedModel: model })
     },
     setAgentPrefetch: (prefetch) => set({ agentPrefetch: prefetch }),
-    setEnabledModels: (models) => set({ enabledModels: models }),
     loadAvailableModels: async () => {
       set({ isLoadingModels: true })
       try {
diff --git a/apps/sim/stores/panel/copilot/types.ts b/apps/sim/stores/panel/copilot/types.ts
index 451523711a..883e4a9b52 100644
--- a/apps/sim/stores/panel/copilot/types.ts
+++ b/apps/sim/stores/panel/copilot/types.ts
@@ -116,7 +116,6 @@ export interface CopilotState {
   mode: CopilotMode
   selectedModel: CopilotModelId
   agentPrefetch: boolean
-  enabledModels: string[] | null // Null means not loaded yet, array of model IDs when loaded
   availableModels: AvailableModel[]
   isLoadingModels: boolean
   isCollapsed: boolean
@@ -186,7 +185,6 @@ export interface CopilotActions {
   setMode: (mode: CopilotMode) => void
   setSelectedModel: (model: CopilotStore['selectedModel']) => Promise<void>
   setAgentPrefetch: (prefetch: boolean) => void
-  setEnabledModels: (models: string[] | null) => void
   loadAvailableModels: () => Promise<void>
 
   setWorkflowId: (workflowId: string | null) => Promise<void>

From b5b0c396002a57c1573260fe30091b7a4d89c896 Mon Sep 17 00:00:00 2001
From: Siddharth Ganesan <siddharthganesan@gmail.com>
Date: Tue, 10 Feb 2026 14:59:38 -0800
Subject: [PATCH 6/9] Clean up code

---
 apps/sim/app/api/copilot/chat/route.ts        |  50 ++-
 apps/sim/app/api/mcp/copilot/route.ts         |   4 +-
 apps/sim/app/api/v1/copilot/chat/route.ts     |   2 +-
 apps/sim/lib/copilot/chat-title.ts            |  59 ----
 apps/sim/lib/copilot/config.ts                | 289 ------------------
 .../tools/server/docs/search-documentation.ts |   6 +-
 6 files changed, 53 insertions(+), 357 deletions(-)
 delete mode 100644 apps/sim/lib/copilot/chat-title.ts

diff --git a/apps/sim/app/api/copilot/chat/route.ts b/apps/sim/app/api/copilot/chat/route.ts
index 8a780ed474..513c0798d8 100644
--- a/apps/sim/app/api/copilot/chat/route.ts
+++ b/apps/sim/app/api/copilot/chat/route.ts
@@ -8,7 +8,7 @@ import { getSession } from '@/lib/auth'
 import { buildConversationHistory } from '@/lib/copilot/chat-context'
 import { resolveOrCreateChat } from '@/lib/copilot/chat-lifecycle'
 import { buildCopilotRequestPayload } from '@/lib/copilot/chat-payload'
-import { generateChatTitle } from '@/lib/copilot/chat-title'
+import { SIM_AGENT_API_URL } from '@/lib/copilot/constants'
 import { COPILOT_REQUEST_MODES } from '@/lib/copilot/models'
 import { orchestrateCopilotStream } from '@/lib/copilot/orchestrator'
 import {
@@ -23,10 +23,54 @@ import {
   createRequestTracker,
   createUnauthorizedResponse,
 } from '@/lib/copilot/request-helpers'
+import { env } from '@/lib/core/config/env'
 import { resolveWorkflowIdForUser } from '@/lib/workflows/utils'
 
 const logger = createLogger('CopilotChatAPI')
 
+async function requestChatTitleFromCopilot(params: {
+  message: string
+  model: string
+  provider?: string
+}): Promise<string | null> {
+  const { message, model, provider } = params
+  if (!message || !model) return null
+
+  const headers: Record<string, string> = {
+    'Content-Type': 'application/json',
+  }
+  if (env.COPILOT_API_KEY) {
+    headers['x-api-key'] = env.COPILOT_API_KEY
+  }
+
+  try {
+    const response = await fetch(`${SIM_AGENT_API_URL}/api/generate-chat-title`, {
+      method: 'POST',
+      headers,
+      body: JSON.stringify({
+        message,
+        model,
+        ...(provider ? { provider } : {}),
+      }),
+    })
+
+    const payload = await response.json().catch(() => ({}))
+    if (!response.ok) {
+      logger.warn('Failed to generate chat title via copilot backend', {
+        status: response.status,
+        error: payload,
+      })
+      return null
+    }
+
+    const title = typeof payload?.title === 'string' ? payload.title.trim() : ''
+    return title || null
+  } catch (error) {
+    logger.error('Error generating chat title:', error)
+    return null
+  }
+}
+
 const FileAttachmentSchema = z.object({
   id: z.string(),
   key: z.string(),
@@ -280,7 +324,7 @@ export async function POST(req: NextRequest) {
           }
 
           if (actualChatId && !currentChat?.title && conversationHistory.length === 0) {
-            generateChatTitle({ message, model: selectedModel, provider })
+            requestChatTitleFromCopilot({ message, model: selectedModel, provider })
               .then(async (title) => {
                 if (title) {
                   await db
@@ -407,7 +451,7 @@ export async function POST(req: NextRequest) {
       // Start title generation in parallel if this is first message (non-streaming)
       if (actualChatId && !currentChat.title && conversationHistory.length === 0) {
         logger.info(`[${tracker.requestId}] Starting title generation for non-streaming response`)
-        generateChatTitle({ message, model: selectedModel, provider })
+        requestChatTitleFromCopilot({ message, model: selectedModel, provider })
           .then(async (title) => {
             if (title) {
               await db
diff --git a/apps/sim/app/api/mcp/copilot/route.ts b/apps/sim/app/api/mcp/copilot/route.ts
index 4d02ab122f..79268ecfc0 100644
--- a/apps/sim/app/api/mcp/copilot/route.ts
+++ b/apps/sim/app/api/mcp/copilot/route.ts
@@ -624,7 +624,7 @@ async function handleBuildToolCall(
 ): Promise<CallToolResult> {
   try {
     const requestText = (args.request as string) || JSON.stringify(args)
-    const { model } = getCopilotModel('chat')
+    const { model } = getCopilotModel()
     const workflowId = args.workflowId as string | undefined
 
     const resolved = workflowId ? { workflowId } : await resolveWorkflowIdForUser(userId)
@@ -721,7 +721,7 @@ async function handleSubagentToolCall(
       context.plan = args.plan
     }
 
-    const { model } = getCopilotModel('chat')
+    const { model } = getCopilotModel()
 
     const result = await orchestrateSubagentStream(
       toolDef.agentId,
diff --git a/apps/sim/app/api/v1/copilot/chat/route.ts b/apps/sim/app/api/v1/copilot/chat/route.ts
index d08234cff0..fbce426bbf 100644
--- a/apps/sim/app/api/v1/copilot/chat/route.ts
+++ b/apps/sim/app/api/v1/copilot/chat/route.ts
@@ -42,7 +42,7 @@ export async function POST(req: NextRequest) {
   try {
     const body = await req.json()
     const parsed = RequestSchema.parse(body)
-    const defaults = getCopilotModel('chat')
+    const defaults = getCopilotModel()
     const selectedModel = parsed.model || defaults.model
 
     // Resolve workflow ID
diff --git a/apps/sim/lib/copilot/chat-title.ts b/apps/sim/lib/copilot/chat-title.ts
deleted file mode 100644
index 6f890338a1..0000000000
--- a/apps/sim/lib/copilot/chat-title.ts
+++ /dev/null
@@ -1,59 +0,0 @@
-import { createLogger } from '@sim/logger'
-import { SIM_AGENT_API_URL } from '@/lib/copilot/constants'
-import { env } from '@/lib/core/config/env'
-
-const logger = createLogger('SimAgentUtils')
-
-interface GenerateChatTitleParams {
-  message: string
-  model: string
-  provider?: string
-}
-
-/**
- * Generates a short title for a chat based on the first message
- * using the Copilot backend's server-side provider configuration.
- */
-export async function generateChatTitle({
-  message,
-  model,
-  provider,
-}: GenerateChatTitleParams): Promise<string | null> {
-  if (!message || !model) {
-    return null
-  }
-
-  const headers: Record<string, string> = {
-    'Content-Type': 'application/json',
-  }
-  if (env.COPILOT_API_KEY) {
-    headers['x-api-key'] = env.COPILOT_API_KEY
-  }
-
-  try {
-    const response = await fetch(`${SIM_AGENT_API_URL}/api/generate-chat-title`, {
-      method: 'POST',
-      headers,
-      body: JSON.stringify({
-        message,
-        model,
-        ...(provider ? { provider } : {}),
-      }),
-    })
-
-    const payload = await response.json().catch(() => ({}))
-    if (!response.ok) {
-      logger.warn('Failed to generate chat title via copilot backend', {
-        status: response.status,
-        error: payload,
-      })
-      return null
-    }
-
-    const title = typeof payload?.title === 'string' ? payload.title.trim() : ''
-    return title || null
-  } catch (error) {
-    logger.error('Error generating chat title:', error)
-    return null
-  }
-}
diff --git a/apps/sim/lib/copilot/config.ts b/apps/sim/lib/copilot/config.ts
index ad2bfb483d..e69de29bb2 100644
--- a/apps/sim/lib/copilot/config.ts
+++ b/apps/sim/lib/copilot/config.ts
@@ -1,289 +0,0 @@
-import { createLogger } from '@sim/logger'
-import { AGENT_MODE_SYSTEM_PROMPT } from '@/lib/copilot/prompts'
-import { getProviderDefaultModel } from '@/providers/models'
-import type { ProviderId } from '@/providers/types'
-
-const logger = createLogger('CopilotConfig')
-
-/**
- * Configuration validation constraints
- */
-const VALIDATION_CONSTRAINTS = {
-  temperature: { min: 0, max: 2 },
-  maxTokens: { min: 1, max: 100000 },
-  maxSources: { min: 1, max: 20 },
-  similarityThreshold: { min: 0, max: 1 },
-  maxConversationHistory: { min: 1, max: 50 },
-} as const
-
-/**
- * Copilot model types
- */
-export type CopilotModelType = 'chat' | 'rag' | 'title'
-
-/**
- * Configuration validation result
- */
-export interface ValidationResult {
-  isValid: boolean
-  errors: string[]
-}
-
-/**
- * Copilot configuration interface
- */
-export interface CopilotConfig {
-  // Chat LLM configuration
-  chat: {
-    defaultProvider: ProviderId
-    defaultModel: string
-    temperature: number
-    maxTokens: number
-    systemPrompt: string
-  }
-  // RAG (documentation search) LLM configuration
-  rag: {
-    defaultProvider: ProviderId
-    defaultModel: string
-    temperature: number
-    maxTokens: number
-    embeddingModel: string
-    maxSources: number
-    similarityThreshold: number
-  }
-  // General configuration
-  general: {
-    streamingEnabled: boolean
-    maxConversationHistory: number
-    titleGenerationModel: string
-  }
-}
-
-function parseFloatEnv(value: string | undefined, name: string): number | null {
-  if (!value) return null
-  const parsed = Number.parseFloat(value)
-  if (Number.isNaN(parsed)) {
-    logger.warn(`Invalid ${name}: ${value}. Expected a valid number.`)
-    return null
-  }
-  return parsed
-}
-
-function parseIntEnv(value: string | undefined, name: string): number | null {
-  if (!value) return null
-  const parsed = Number.parseInt(value, 10)
-  if (Number.isNaN(parsed)) {
-    logger.warn(`Invalid ${name}: ${value}. Expected a valid integer.`)
-    return null
-  }
-  return parsed
-}
-
-function parseBooleanEnv(value: string | undefined): boolean | null {
-  if (!value) return null
-  return value.toLowerCase() === 'true'
-}
-
-export const DEFAULT_COPILOT_CONFIG: CopilotConfig = {
-  chat: {
-    defaultProvider: 'anthropic',
-    defaultModel: 'claude-4.6-opus',
-    temperature: 0.1,
-    maxTokens: 8192,
-    systemPrompt: AGENT_MODE_SYSTEM_PROMPT,
-  },
-  rag: {
-    defaultProvider: 'anthropic',
-    defaultModel: 'claude-4.6-opus',
-    temperature: 0.1,
-    maxTokens: 2000,
-    embeddingModel: 'text-embedding-3-small',
-    maxSources: 10,
-    similarityThreshold: 0.3,
-  },
-  general: {
-    streamingEnabled: true,
-    maxConversationHistory: 10,
-    titleGenerationModel: 'claude-3-haiku-20240307',
-  },
-}
-
-function applyEnvironmentOverrides(config: CopilotConfig): void {
-  const chatTemperature = parseFloatEnv(
-    process.env.COPILOT_CHAT_TEMPERATURE,
-    'COPILOT_CHAT_TEMPERATURE'
-  )
-  if (chatTemperature !== null) {
-    config.chat.temperature = chatTemperature
-  }
-
-  const chatMaxTokens = parseIntEnv(process.env.COPILOT_CHAT_MAX_TOKENS, 'COPILOT_CHAT_MAX_TOKENS')
-  if (chatMaxTokens !== null) {
-    config.chat.maxTokens = chatMaxTokens
-  }
-
-  const ragTemperature = parseFloatEnv(
-    process.env.COPILOT_RAG_TEMPERATURE,
-    'COPILOT_RAG_TEMPERATURE'
-  )
-  if (ragTemperature !== null) {
-    config.rag.temperature = ragTemperature
-  }
-
-  const ragMaxTokens = parseIntEnv(process.env.COPILOT_RAG_MAX_TOKENS, 'COPILOT_RAG_MAX_TOKENS')
-  if (ragMaxTokens !== null) {
-    config.rag.maxTokens = ragMaxTokens
-  }
-
-  const ragMaxSources = parseIntEnv(process.env.COPILOT_RAG_MAX_SOURCES, 'COPILOT_RAG_MAX_SOURCES')
-  if (ragMaxSources !== null) {
-    config.rag.maxSources = ragMaxSources
-  }
-
-  const ragSimilarityThreshold = parseFloatEnv(
-    process.env.COPILOT_RAG_SIMILARITY_THRESHOLD,
-    'COPILOT_RAG_SIMILARITY_THRESHOLD'
-  )
-  if (ragSimilarityThreshold !== null) {
-    config.rag.similarityThreshold = ragSimilarityThreshold
-  }
-
-  const streamingEnabled = parseBooleanEnv(process.env.COPILOT_STREAMING_ENABLED)
-  if (streamingEnabled !== null) {
-    config.general.streamingEnabled = streamingEnabled
-  }
-
-  const maxConversationHistory = parseIntEnv(
-    process.env.COPILOT_MAX_CONVERSATION_HISTORY,
-    'COPILOT_MAX_CONVERSATION_HISTORY'
-  )
-  if (maxConversationHistory !== null) {
-    config.general.maxConversationHistory = maxConversationHistory
-  }
-
-  if (process.env.COPILOT_TITLE_GENERATION_MODEL) {
-    config.general.titleGenerationModel = process.env.COPILOT_TITLE_GENERATION_MODEL
-  }
-}
-
-export function getCopilotConfig(): CopilotConfig {
-  const config = structuredClone(DEFAULT_COPILOT_CONFIG)
-
-  try {
-    applyEnvironmentOverrides(config)
-  } catch (error) {
-    logger.warn('Error applying environment variable overrides, using defaults', { error })
-  }
-
-  return config
-}
-
-export function getCopilotModel(type: CopilotModelType): {
-  provider: ProviderId
-  model: string
-} {
-  const config = getCopilotConfig()
-
-  switch (type) {
-    case 'chat':
-      return {
-        provider: config.chat.defaultProvider,
-        model: config.chat.defaultModel,
-      }
-    case 'rag':
-      return {
-        provider: config.rag.defaultProvider,
-        model: config.rag.defaultModel,
-      }
-    case 'title':
-      return {
-        provider: config.chat.defaultProvider,
-        model: config.general.titleGenerationModel,
-      }
-    default:
-      throw new Error(`Unknown copilot model type: ${type}`)
-  }
-}
-
-function validateNumericValue(
-  value: number,
-  constraint: { min: number; max: number },
-  name: string
-): string | null {
-  if (value < constraint.min || value > constraint.max) {
-    return `${name} must be between ${constraint.min} and ${constraint.max}`
-  }
-  return null
-}
-
-export function validateCopilotConfig(config: CopilotConfig): ValidationResult {
-  const errors: string[] = []
-
-  try {
-    const chatDefaultModel = getProviderDefaultModel(config.chat.defaultProvider)
-    if (!chatDefaultModel) {
-      errors.push(`Chat provider '${config.chat.defaultProvider}' not found`)
-    }
-  } catch (error) {
-    errors.push(`Invalid chat provider: ${config.chat.defaultProvider}`)
-  }
-
-  try {
-    const ragDefaultModel = getProviderDefaultModel(config.rag.defaultProvider)
-    if (!ragDefaultModel) {
-      errors.push(`RAG provider '${config.rag.defaultProvider}' not found`)
-    }
-  } catch (error) {
-    errors.push(`Invalid RAG provider: ${config.rag.defaultProvider}`)
-  }
-
-  const validationChecks = [
-    {
-      value: config.chat.temperature,
-      constraint: VALIDATION_CONSTRAINTS.temperature,
-      name: 'Chat temperature',
-    },
-    {
-      value: config.rag.temperature,
-      constraint: VALIDATION_CONSTRAINTS.temperature,
-      name: 'RAG temperature',
-    },
-    {
-      value: config.chat.maxTokens,
-      constraint: VALIDATION_CONSTRAINTS.maxTokens,
-      name: 'Chat maxTokens',
-    },
-    {
-      value: config.rag.maxTokens,
-      constraint: VALIDATION_CONSTRAINTS.maxTokens,
-      name: 'RAG maxTokens',
-    },
-    {
-      value: config.rag.maxSources,
-      constraint: VALIDATION_CONSTRAINTS.maxSources,
-      name: 'RAG maxSources',
-    },
-    {
-      value: config.rag.similarityThreshold,
-      constraint: VALIDATION_CONSTRAINTS.similarityThreshold,
-      name: 'RAG similarityThreshold',
-    },
-    {
-      value: config.general.maxConversationHistory,
-      constraint: VALIDATION_CONSTRAINTS.maxConversationHistory,
-      name: 'General maxConversationHistory',
-    },
-  ]
-
-  for (const check of validationChecks) {
-    const error = validateNumericValue(check.value, check.constraint, check.name)
-    if (error) {
-      errors.push(error)
-    }
-  }
-
-  return {
-    isValid: errors.length === 0,
-    errors,
-  }
-}
diff --git a/apps/sim/lib/copilot/tools/server/docs/search-documentation.ts b/apps/sim/lib/copilot/tools/server/docs/search-documentation.ts
index 0fe3eb4134..a8ac015395 100644
--- a/apps/sim/lib/copilot/tools/server/docs/search-documentation.ts
+++ b/apps/sim/lib/copilot/tools/server/docs/search-documentation.ts
@@ -10,6 +10,8 @@ interface DocsSearchParams {
   threshold?: number
 }
 
+const DEFAULT_DOCS_SIMILARITY_THRESHOLD = 0.3
+
 export const searchDocumentationServerTool: BaseServerTool<DocsSearchParams, any> = {
   name: 'search_documentation',
   async execute(params: DocsSearchParams): Promise<any> {
@@ -19,9 +21,7 @@ export const searchDocumentationServerTool: BaseServerTool<DocsSearchParams, any
 
     logger.info('Executing docs search', { query, topK })
 
-    const { getCopilotConfig } = await import('@/lib/copilot/config')
-    const config = getCopilotConfig()
-    const similarityThreshold = threshold ?? config.rag.similarityThreshold
+    const similarityThreshold = threshold ?? DEFAULT_DOCS_SIMILARITY_THRESHOLD
 
     const { generateSearchEmbedding } = await import('@/lib/knowledge/embeddings')
     const queryEmbedding = await generateSearchEmbedding(query)

From 73f2e73b4e3073b975e64752ac0a01dd7770f71b Mon Sep 17 00:00:00 2001
From: Siddharth Ganesan <siddharthganesan@gmail.com>
Date: Tue, 10 Feb 2026 15:00:07 -0800
Subject: [PATCH 7/9] Fix lint

---
 .../components/model-selector/model-selector.tsx       | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx
index 0a10215c3e..d79e8c3ba2 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx
@@ -9,13 +9,7 @@ import {
   PopoverItem,
   PopoverScrollArea,
 } from '@/components/emcn'
-import {
-  AnthropicIcon,
-  AzureIcon,
-  BedrockIcon,
-  GeminiIcon,
-  OpenAIIcon,
-} from '@/components/icons'
+import { AnthropicIcon, AzureIcon, BedrockIcon, GeminiIcon, OpenAIIcon } from '@/components/icons'
 import { useCopilotStore } from '@/stores/panel'
 
 interface ModelSelectorProps {
@@ -177,7 +171,7 @@ export function ModelSelector({ selectedModel, isNearTop, onModelSelect }: Model
               </PopoverItem>
             ))
           ) : (
-            <div className='px-2 py-2 text-xs text-[var(--text-muted)]'>No models available</div>
+            <div className='px-2 py-2 text-[var(--text-muted)] text-xs'>No models available</div>
           )}
         </PopoverScrollArea>
       </PopoverContent>

From a88d5f6475e2fbdfbd746509a291725840c050fd Mon Sep 17 00:00:00 2001
From: Siddharth Ganesan <siddharthganesan@gmail.com>
Date: Tue, 10 Feb 2026 15:48:49 -0800
Subject: [PATCH 8/9] cleanup

---
 apps/sim/app/api/mcp/copilot/route.ts     | 9 +++------
 apps/sim/app/api/v1/copilot/chat/route.ts | 5 ++---
 apps/sim/lib/copilot/config.ts            | 0
 3 files changed, 5 insertions(+), 9 deletions(-)
 delete mode 100644 apps/sim/lib/copilot/config.ts

diff --git a/apps/sim/app/api/mcp/copilot/route.ts b/apps/sim/app/api/mcp/copilot/route.ts
index 79268ecfc0..cc84a53a95 100644
--- a/apps/sim/app/api/mcp/copilot/route.ts
+++ b/apps/sim/app/api/mcp/copilot/route.ts
@@ -17,7 +17,6 @@ import { createLogger } from '@sim/logger'
 import { eq, sql } from 'drizzle-orm'
 import { type NextRequest, NextResponse } from 'next/server'
 import { getHighestPrioritySubscription } from '@/lib/billing/core/subscription'
-import { getCopilotModel } from '@/lib/copilot/config'
 import {
   ORCHESTRATION_TIMEOUT_MS,
   SIM_AGENT_API_URL,
@@ -36,6 +35,7 @@ import { resolveWorkflowIdForUser } from '@/lib/workflows/utils'
 
 const logger = createLogger('CopilotMcpAPI')
 const mcpRateLimiter = new RateLimiter()
+const DEFAULT_COPILOT_MODEL = 'claude-opus-4-6'
 
 export const dynamic = 'force-dynamic'
 export const runtime = 'nodejs'
@@ -624,7 +624,6 @@ async function handleBuildToolCall(
 ): Promise<CallToolResult> {
   try {
     const requestText = (args.request as string) || JSON.stringify(args)
-    const { model } = getCopilotModel()
     const workflowId = args.workflowId as string | undefined
 
     const resolved = workflowId ? { workflowId } : await resolveWorkflowIdForUser(userId)
@@ -654,7 +653,7 @@ async function handleBuildToolCall(
       message: requestText,
       workflowId: resolved.workflowId,
       userId,
-      model,
+      model: DEFAULT_COPILOT_MODEL,
       mode: 'agent',
       commands: ['fast'],
       messageId: randomUUID(),
@@ -721,8 +720,6 @@ async function handleSubagentToolCall(
       context.plan = args.plan
     }
 
-    const { model } = getCopilotModel()
-
     const result = await orchestrateSubagentStream(
       toolDef.agentId,
       {
@@ -730,7 +727,7 @@ async function handleSubagentToolCall(
         workflowId: args.workflowId,
         workspaceId: args.workspaceId,
         context,
-        model,
+        model: DEFAULT_COPILOT_MODEL,
         headless: true,
         source: 'mcp',
       },
diff --git a/apps/sim/app/api/v1/copilot/chat/route.ts b/apps/sim/app/api/v1/copilot/chat/route.ts
index fbce426bbf..9a71ee54b2 100644
--- a/apps/sim/app/api/v1/copilot/chat/route.ts
+++ b/apps/sim/app/api/v1/copilot/chat/route.ts
@@ -1,7 +1,6 @@
 import { createLogger } from '@sim/logger'
 import { type NextRequest, NextResponse } from 'next/server'
 import { z } from 'zod'
-import { getCopilotModel } from '@/lib/copilot/config'
 import { SIM_AGENT_VERSION } from '@/lib/copilot/constants'
 import { COPILOT_REQUEST_MODES } from '@/lib/copilot/models'
 import { orchestrateCopilotStream } from '@/lib/copilot/orchestrator'
@@ -9,6 +8,7 @@ import { resolveWorkflowIdForUser } from '@/lib/workflows/utils'
 import { authenticateV1Request } from '@/app/api/v1/auth'
 
 const logger = createLogger('CopilotHeadlessAPI')
+const DEFAULT_COPILOT_MODEL = 'claude-opus-4-6'
 
 const RequestSchema = z.object({
   message: z.string().min(1, 'message is required'),
@@ -42,8 +42,7 @@ export async function POST(req: NextRequest) {
   try {
     const body = await req.json()
     const parsed = RequestSchema.parse(body)
-    const defaults = getCopilotModel()
-    const selectedModel = parsed.model || defaults.model
+    const selectedModel = parsed.model || DEFAULT_COPILOT_MODEL
 
     // Resolve workflow ID
     const resolved = await resolveWorkflowIdForUser(
diff --git a/apps/sim/lib/copilot/config.ts b/apps/sim/lib/copilot/config.ts
deleted file mode 100644
index e69de29bb2..0000000000

From 78751c76218275ae1049a79a971546254ccaf2c1 Mon Sep 17 00:00:00 2001
From: Siddharth Ganesan <siddharthganesan@gmail.com>
Date: Tue, 10 Feb 2026 16:25:58 -0800
Subject: [PATCH 9/9] Fix greptile

---
 .../model-selector/model-selector.tsx         | 15 +++-
 apps/sim/stores/panel/copilot/store.ts        | 77 +++++++++++++++++--
 2 files changed, 81 insertions(+), 11 deletions(-)

diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx
index d79e8c3ba2..6268287259 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/user-input/components/model-selector/model-selector.tsx
@@ -67,12 +67,21 @@ export function ModelSelector({ selectedModel, isNearTop, onModelSelect }: Model
    */
   const getProviderForModel = (compositeKey: string): string | undefined => {
     const slashIdx = compositeKey.indexOf('/')
-    if (slashIdx === -1) return undefined
-    return compositeKey.slice(0, slashIdx)
+    if (slashIdx !== -1) return compositeKey.slice(0, slashIdx)
+
+    // Legacy migration path: allow old raw IDs (without provider prefix)
+    // by resolving against current available model options.
+    const exact = modelOptions.find((m) => m.value === compositeKey)
+    if (exact?.provider) return exact.provider
+
+    const byRawSuffix = modelOptions.find((m) => m.value.endsWith(`/${compositeKey}`))
+    return byRawSuffix?.provider
   }
 
   const getCollapsedModeLabel = () => {
-    const model = modelOptions.find((m) => m.value === selectedModel)
+    const model =
+      modelOptions.find((m) => m.value === selectedModel) ??
+      modelOptions.find((m) => m.value.endsWith(`/${selectedModel}`))
     return model?.label || selectedModel || 'No models available'
   }
 
diff --git a/apps/sim/stores/panel/copilot/store.ts b/apps/sim/stores/panel/copilot/store.ts
index 4ef492b942..e7261a229d 100644
--- a/apps/sim/stores/panel/copilot/store.ts
+++ b/apps/sim/stores/panel/copilot/store.ts
@@ -310,6 +310,58 @@ function parseModelKey(compositeKey: string): { provider: string; modelId: strin
   return { provider: compositeKey.slice(0, slashIdx), modelId: compositeKey.slice(slashIdx + 1) }
 }
 
+const MODEL_PROVIDER_PRIORITY = [
+  'anthropic',
+  'bedrock',
+  'azure-anthropic',
+  'openai',
+  'azure-openai',
+  'gemini',
+  'google',
+  'azure',
+  'unknown',
+] as const
+
+const KNOWN_COPILOT_PROVIDERS = new Set<string>(MODEL_PROVIDER_PRIORITY)
+
+function isCompositeModelId(modelId: string): boolean {
+  const slashIdx = modelId.indexOf('/')
+  if (slashIdx <= 0 || slashIdx === modelId.length - 1) return false
+  const provider = modelId.slice(0, slashIdx)
+  return KNOWN_COPILOT_PROVIDERS.has(provider)
+}
+
+function toCompositeModelId(modelId: string, provider: string): string {
+  if (!modelId) return modelId
+  return isCompositeModelId(modelId) ? modelId : `${provider}/${modelId}`
+}
+
+function pickPreferredProviderModel(matches: AvailableModel[]): AvailableModel | undefined {
+  for (const provider of MODEL_PROVIDER_PRIORITY) {
+    const found = matches.find((m) => m.provider === provider)
+    if (found) return found
+  }
+  return matches[0]
+}
+
+function normalizeSelectedModelKey(selectedModel: string, models: AvailableModel[]): string {
+  if (!selectedModel || models.length === 0) return selectedModel
+  if (models.some((m) => m.id === selectedModel)) return selectedModel
+
+  const { provider, modelId } = parseModelKey(selectedModel)
+  const targetModelId = modelId || selectedModel
+
+  const matches = models.filter((m) => m.id.endsWith(`/${targetModelId}`))
+  if (matches.length === 0) return selectedModel
+
+  if (provider) {
+    const sameProvider = matches.find((m) => m.provider === provider)
+    if (sameProvider) return sameProvider.id
+  }
+
+  return (pickPreferredProviderModel(matches) ?? matches[0]).id
+}
+
 /** Look up the provider for the currently selected model from the composite key. */
 function getSelectedProvider(get: CopilotGet): string | undefined {
   const { provider } = parseModelKey(get().selectedModel)
@@ -2230,6 +2282,7 @@ export const useCopilotStore = create<CopilotStore>()(
         const data = await response.json()
         const models: unknown[] = Array.isArray(data?.models) ? data.models : []
 
+        const seenModelIds = new Set<string>()
         const normalizedModels: AvailableModel[] = models
           .filter((model: unknown): model is AvailableModel => {
             return (
@@ -2240,27 +2293,35 @@ export const useCopilotStore = create<CopilotStore>()(
             )
           })
           .map((model: AvailableModel) => {
-            const provider = model.provider || 'unknown'
-            // Use composite provider/modelId keys (matching agent block pattern in providers/models.ts)
-            // so models with the same raw ID from different providers are uniquely identified.
-            const compositeId = `${provider}/${model.id}`
+            const idProvider = isCompositeModelId(model.id) ? parseModelKey(model.id).provider : ''
+            const provider = model.provider || idProvider || 'unknown'
+            // Use stable composite provider/modelId keys so same model IDs from different
+            // providers remain uniquely addressable.
+            const compositeId = toCompositeModelId(model.id, provider)
             return {
               id: compositeId,
               friendlyName: model.friendlyName || model.id,
               provider,
             }
           })
+          .filter((model) => {
+            if (seenModelIds.has(model.id)) return false
+            seenModelIds.add(model.id)
+            return true
+          })
 
         const { selectedModel } = get()
-        const selectedModelExists = normalizedModels.some((model) => model.id === selectedModel)
+        const normalizedSelectedModel = normalizeSelectedModelKey(selectedModel, normalizedModels)
+        const selectedModelExists = normalizedModels.some(
+          (model) => model.id === normalizedSelectedModel
+        )
 
         // Pick the best default: prefer claude-opus-4-6 with provider priority:
         // direct anthropic > bedrock > azure-anthropic > any other.
-        let nextSelectedModel = selectedModel
+        let nextSelectedModel = normalizedSelectedModel
         if (!selectedModelExists && normalizedModels.length > 0) {
-          const providerPriority = ['anthropic', 'bedrock', 'azure-anthropic']
           let opus46: AvailableModel | undefined
-          for (const prov of providerPriority) {
+          for (const prov of MODEL_PROVIDER_PRIORITY) {
             opus46 = normalizedModels.find((m) => m.id === `${prov}/claude-opus-4-6`)
             if (opus46) break
           }