add support for the latest claude 3.7 sonnet models

[greg-niemeyer]

Description

Adds support for the latest Claude 3.7 release: https://docs.anthropic.com/en/docs/about-claude/models/all-models

New Package?

Did I fill in the tool.llamahub section in the pyproject.toml and provide a detailed README.md for my new integration or package?

• Yes
• No

Version Bump?

Did I bump the version in the pyproject.toml file of the package I am updating? (Except for the llama-index-core package)

• Yes
• No

Type of Change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Your pull-request will likely not be merged unless it is covered by some form of impactful unit testing.

• I added new unit tests to cover this change
• I believe this change is already covered by existing unit tests

Suggested Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added Google Colab support for the newly added notebooks.
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I ran make format; make lint to appease the lint gods

[Digma]

Thanks for the quick update.

Wondering if you got a chance to look at the thinking capabilities and how much work it would be to add them?

[greg-niemeyer]

i have not looked into it and i probably don't have bandwidth to add that support, but if you want to take the PR over and do it that works for me too.

[greg-niemeyer]

confirmed that the added support for 3.7 works using the anthropic SDK.

when attempting to run the bedrock test with 3.7, i get "Invocation of model ID anthropic.claude-3-7-sonnet-20250219-v1:0 with on-demand throughput isn’t supported", but it recognizes the model -- passing a bad name yields "The provided model identifier is invalid" instead.

similarly with vertex, i have to apply to get the model enabled for my project and get a "is not allowed to use Publisher Model [...] FAILED_PRECONDITION" error, whereas with a bad model id i get 'Publisher model [...] not found.'

[greg-niemeyer]

lol looks like llama-index devs already opened an earlier PR and merged the changes (#17905). closing