pydantic-ai 2.1.0
v2.1.0 (2026-06-29)

on Python PyPI

4 hours ago

What's Changed

🚀 Features

feat: Add Anthropic _20260209 web tools with server-tool replay by @adtyavrdhn in #4844
Serialize instrumentation message attributes with to_json instead of json.dumps by @Kludex in #6045
Add TypeAdapter for EvaluatorContext by @hon-gyu in #3373

🐛 Bug Fixes

Convert ExceptionGroup-wrapped tool errors to ModelRetry in MCPToolset by @dmontagu in #6004
fix: prevent cancel() from flipping complete state on finished stream by @Oxygen56 in #5795
fix(temporal): add return type annotation to PydanticAIPlugin.__init__ by @syf2211 in #6065
fix(anthropic): support Bedrock token counting by @dyscott in #5480

New Contributors

@lucaszhu-hue made their first contribution in #5982
@syf2211 made their first contribution in #6065
@dyscott made their first contribution in #5480
@hon-gyu made their first contribution in #3373

Full Changelog: v2.0.0...v2.1.0

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