feat (providers/anthropic): add claude v4 models

[jeremyphilemon]

Background

This pull request adds support for Anthropic's new Claude v4 models.

Summary

Updated the model ids to include claude-4-opus-20250514 and claude-4-sonnet-20250514.

Tasks

• A patch changeset for relevant packages has been added (for bug fixes / features - run pnpm changeset in the project root)
• Formatting issues have been fixed (run pnpm prettier-fix in the project root)

[behoss]

@jeremyphilemon would you please be able to add model aliases as well?
-> https://docs.anthropic.com/en/docs/about-claude/models/overview#model-aliases

[cacoos]

hey @jeremyphilemon! some logging providers are not being able to get the price correctly, bc the official names are different:

https://docs.anthropic.com/en/docs/about-claude/models/overview

what's the best approach here?

[shaper]

hey @jeremyphilemon! some logging providers are not being able to get the price correctly, bc the official names are different:

Hi @cacoos can you provide more detail on which logging providers? Asking in part because on review of the Anthropic page I see this:

While aliases are useful for experimentation, we recommend using specific model versions (e.g., claude-sonnet-4-20250514) in production applications to ensure consistent behavior.

The spirit of this seems like it is, "in production you should use an explicit model id, and not rely on one of these aliases."

So I wonder whether the right fix is for the logging providers to update, have you talked with them, and which ones are affected from your perspective?