[ENHANCEMENT] Add Claude Opus 4.7 support on AWS Bedrock

[andylemin]

Problem (one or two sentences)

Hi. Claude Opus 4.7 support was added on Google's AI Vertex for a couple weeks now, can we please add the same for AWS Bedrock?

🙏 Thank you for your time and work

Context (who is affected and when)

Everyone who uses AWS Bedrock = maybe half the userbase

Desired behavior (conceptual, not technical)

Claude Opus 4.7 support on AWS Bedrock

Constraints / preferences (optional)

Claude Opus 4.7 support on AWS Bedrock

Request checklist

• I've searched existing Issues and Discussions for duplicates
• This describes a specific problem with clear context and impact

[roomote-v0]

I've analyzed this issue and here's my proposed implementation plan:

Claude Opus 4.7 is already available on Vertex (claude-opus-4-7 in packages/types/src/providers/vertex.ts) but is missing from the Bedrock provider configuration. Following the same pattern used when Opus 4.6 was added to Bedrock (anthropic.claude-opus-4-6-v1), here's what needs to change:

1. Add model definition to packages/types/src/providers/bedrock.ts

• Add "anthropic.claude-opus-4-7-v1" entry to the bedrockModels object with the same pricing and capabilities as the Vertex/Anthropic Opus 4.7 model (maxTokens: 8192, contextWindow: 200K, supports images, prompt cache, reasoning budget, tiered pricing for 1M context).

2. Add to BEDROCK_1M_CONTEXT_MODEL_IDS array

• Add "anthropic.claude-opus-4-7-v1" to this array so the 1M context beta flag support works for this model.

3. Add to BEDROCK_GLOBAL_INFERENCE_MODEL_IDS array

• Add "anthropic.claude-opus-4-7-v1" so that cross-region inference profiles work for this model.

4. Update src/api/providers/anthropic.ts

• Add "claude-opus-4-7" to the 1M context beta flag checks (alongside claude-opus-4-6 and claude-sonnet-4-6).
• Add "claude-opus-4-7" to the extended thinking model case statements.

5. Update packages/types/src/providers/anthropic.ts

• Add "claude-opus-4-7" model entry to anthropicModels with appropriate specs (matching Vertex definition but with Anthropic-style maxTokens of 128K when reasoning is enabled).

6. Update src/api/providers/fetchers/openrouter.ts

• Add handling for "anthropic/claude-opus-4.7" to set the correct maxTokens from anthropicModels["claude-opus-4-7"].

7. Add tests

• Ensure existing Bedrock tests cover the new model ID where appropriate.

This approach mirrors exactly how Opus 4.6 was added across all three providers (Anthropic, Vertex, Bedrock) and ensures consistent behavior.

Please mention @roomote in a comment saying that you approve this plan, and I'll proceed with the implementation.