[Anandb71]

What Changed?

as discussed over email, the anthropic service default moves from claude-sonnet-4-5-20250929 to claude-sonnet-5-5.

Why?

sonnet 4.5 retires on nov 30, 2026. per the migration guide, sonnet 5.5 rejects temperature, top_p and top_k, so for that model i drop them from the stream request (including overrides from extra). the non streaming path now joins text blocks instead of reading content[0], since a thinking block can come first.

one thing i left alone on purpose: sonnet 5.5 thinks adaptively by default, and tool continuations normally replay the signed thinking block. the streaming loop doesn't keep those yet. happy to add that in a follow up if you want, it touches the context aggregator so i didn't want to guess at your design here.

How to Test?

PYTHONPATH=src pytest tests/test_services/test_anthropic_llm.py --disable-socket --allow-unix-socket -q (6 passed, python 3.11, mocked sdk, no network). black and ruff pass on the touched files.

Release Label

• fix

Checklist

• i have read the CONTRIBUTING.md guide.
• my changes follow the project's style guidelines.
• i have added tests that prove my fix is effective.
• i have updated documentation where needed.

[greptile-apps]

Confidence Score: 5/5

[Medium impact] The reviewed changes appear safe to merge.

Summary

Updates the Anthropic service default to claude-sonnet-5-5.

• Anthropic requests now default to Sonnet 5.5 and drop its sampling fields.
• One-shot Anthropic replies now return text from every text block.

Anandb71 explicitly deferred preserving signed thinking blocks during tool continuations because it touches the context aggregator.

_{Reviews (1) · Last reviewed commit: "fix: update anthropic default to claude ..." · Reviewed by Greptile}