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v2.27.1

pydantic/pydantic-aiv2.27.1Aug 11, 2026by dsfaccini

AI Summary

Bug fixes focusing on tool span restoration, streaming response mapping, and OpenTelemetry content gating.

Key Highlights

  • Restore tool spans for failed argument validation
  • Fix `XaiStreamedResponse` finish_reason mapping
  • Gate `RetryPromptPart` OpenTelemetry content on `include_content`
  • Fix `safe_download` Host header dropping non-default port

Full Release Notes

<!-- Release notes generated using configuration in .github/release.yml at main -->

## What's Changed
### 🐛 Bug Fixes
* Restore tool spans for failed argument validation by @adtyavrdhn in https://github.com/pydantic/pydantic-ai/pull/6601
* Fix `XaiStreamedResponse` finish_reason mapping for streaming responses by @pydanty[bot] in https://github.com/pydantic/pydantic-ai/pull/6814
* Point offline web UI hosting at the self-contained chat UI build by @dsfaccini in https://github.com/pydantic/pydantic-ai/pull/7349
* Allow adaptive thinking with Tool Output and forced tool choice on Anthropic by @pydanty[bot] in https://github.com/pydantic/pydantic-ai/pull/7200
* Gate `RetryPromptPart` OpenTelemetry content on `include_content` by @sean-kim05 in https://github.com/pydantic/pydantic-ai/pull/7357


**Full Changelog**: https://github.com/pydantic/pydantic-ai/compare/v2.27.0...v2.27.1