pydantic-ai 2.27.1

v2.27.1 (2026-08-10)

on Python PyPI

What's Changed

🐛 Bug Fixes

• Restore tool spans for failed argument validation by @adtyavrdhn in #6601
• Fix XaiStreamedResponse finish_reason mapping for streaming responses by @pydanty[bot] in #6814
• Point offline web UI hosting at the self-contained chat UI build by @dsfaccini in #7349
• Allow adaptive thinking with Tool Output and forced tool choice on Anthropic by @pydanty[bot] in #7200
• Gate RetryPromptPart OpenTelemetry content on include_content by @sean-kim05 in #7357

Full Changelog: v2.27.0...v2.27.1