Enable native tool calling for Anthropic Claude 3.5 Sonnet (dot-notation) models

[enyst]

Problem

• Sonnet 3.5 models referenced with dot-notation (e.g., claude-3.5-sonnet-...) were not included in FUNCTION_CALLING_PATTERNS, so native tool calling defaulted to off.

Fix

• Add 'claude-3.5-sonnet*' to FUNCTION_CALLING_PATTERNS in openhands/llm/model_features.py so that Sonnet 3.5 dot-notation models default to native tool calling, consistent with the existing dashed variant ('claude-3-5-sonnet*').

Why

• Anthropic models appear in both dashed and dotted naming variants. Haiku entries already accounted for both; Sonnet 3.5 should match the same intent.

Risk

• Low. This only amends the default feature detection for the dotted variant to match the already-enabled dashed variant.

Co-authored-by: openhands [email protected]

@enyst can click here to continue refining the PR

---

To run this PR locally, use the following command:

GUI with Docker:

docker run -it --rm   -p 3000:3000   -v /var/run/docker.sock:/var/run/docker.sock   --add-host host.docker.internal:host-gateway   -e SANDBOX_RUNTIME_CONTAINER_IMAGE=docker.all-hands.dev/all-hands-ai/runtime:a1b716b-nikolaik   --name openhands-app-a1b716b   docker.all-hands.dev/all-hands-ai/openhands:a1b716b

CLI with uvx:

uvx --python 3.12 --from git+https://github.com/All-Hands-AI/OpenHands@fix/sonnet35-native-tools openhands

[openhands-ai]

Looks like there are a few issues preventing this PR from being merged!

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If you'd like me to help, just leave a comment, like

@OpenHands please fix the failing actions on PR #11156 at branch `fix/sonnet35-native-tools`

Feel free to include any additional details that might help me get this PR into a better state.

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[github-actions]

Coverage report

This PR does not seem to contain any modification to coverable code.

[enyst]

Ported to All-Hands-AI/agent-sdk#524