fix(go/plugins/anthropic): resolve models using aliases

[hugoaguirre]

Providing a claude model using an alias without the @YYYYMMDD format will resolve into a valid model name

Checklist (if applicable):

• PR title is following https://www.conventionalcommits.org/en/v1.0.0/
• Tested (manually, unit tested, etc.)
• Docs updated (updated docs or a docs bug required)

[gemini-code-assist]

Summary of Changes

Hello @hugoaguirre, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the Anthropic plugin by introducing support for model aliases. Previously, users had to specify the exact, date-suffixed model ID (e.g., "claude-3-5-sonnet-20240620"). With this change, users can now use simpler aliases like "claude-3-5-sonnet", and the system will automatically resolve it to the latest available full model ID. This significantly improves the developer experience by making model selection more intuitive and less prone to errors when new model versions are released.

Highlights

• Model Alias Resolution: Implemented a new resolveModelID function to map user-provided model aliases (e.g., "claude-3-5-sonnet") to their full, date-suffixed model names (e.g., "claude-3-5-sonnet-20241022") by finding the latest version.
• Flexible Model Instantiation: Modified the newModel function to accept both a user-facing name and an internal apiModelName, allowing the system to use the resolved full model ID when interacting with the Anthropic API.
• Enhanced ResolveAction: Updated the ResolveAction method to leverage the new resolveModelID function, ensuring that model requests using aliases are correctly translated to the appropriate Anthropic model.
• Unit Testing: Added comprehensive unit tests for the resolveModelID function to verify its correctness in handling exact matches, aliases, and non-existent model IDs.

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Changelog

• go/plugins/anthropic/anthropic.go
  • Imported the strings package.
  • Modified the newModel function signature to accept an additional apiModelName parameter.
  • Updated calls to newModel to pass both the user-provided name and the resolved API model name.
  • Implemented the resolveModelID function to find the best matching model ID from a list of available models, supporting exact matches and prefix-based alias resolution.
  • Integrated resolveModelID into the ResolveAction method to dynamically determine the correct model ID for Anthropic API calls.
• go/plugins/anthropic/anthropic_test.go
  • Added a new test file.
  • Included TestResolveModelID to validate the functionality of the resolveModelID function with various test cases, including exact matches, aliases, and non-existent models.

Activity

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[gemini-code-assist]

Code Review

This pull request introduces a helpful feature to resolve Anthropic model aliases to their full, versioned names. The implementation is clean, and the new logic is well-tested with the addition of TestResolveModelID. I have one suggestion to improve performance by caching the list of models to avoid repeated API calls. Overall, this is a great enhancement.

[hugoaguirre]

/gemini review

[gemini-code-assist]

Code Review

This pull request introduces a feature to resolve Anthropic model aliases to their full, versioned names, which is a great enhancement for user experience. The implementation includes a caching mechanism for the list of available models to improve performance, which is well-thought-out. The logic for resolving aliases by finding the lexicographically latest model version is sound, and the addition of unit tests for this logic is appreciated. I have one suggestion to further improve the concurrency handling of the model cache to prevent potential performance bottlenecks.