pydantic-ai 1.51.0

v1.51.0 (2026-01-30)

on Python PyPI

What's Changed

🚀 Features

• feat(ui): Add html_source parameter to customize Chat UI source by @madanlalit in #3974

🐛 Bug Fixes

• Fix error when Gemini calls tools in agent run with instructions but no user prompt by @dsfaccini in #4148
• Fix Bedrock caching when user message ended on non-text content by @DouweM in #4152

New Contributors

• @madanlalit made their first contribution in #3974

Full Changelog: v1.50.0...v1.51.0