pydantic/pydantic-ai v1.39.0

v1.39.0 (2025-12-23)

on GitHub

What's Changed

• Support embedding models by @DouweM and @dmontagu in #3252
• Add Agent and agent run metadata and expose it on result objects and span attributes by @sstanovnik in #3370
• Support system prompts functions returning None by @mrdkucher in #3834
• Handle ThinkingPart in MCP Sampling by @eekstunt in #3823
• Add bedrock_service_tier setting to BedrockModelSettings by @lukekh in #3773
• Add docs and tests for RunContext.partial_output in output tools by @Danipulok in #3726
• Update docs about choosing priority of output and deferred tool calls with run_stream by @Danipulok in #3725
• docs: Fix cross references by @sanxiyn in #3809
• Add pydantic-deep + toolsets to docs by @DouweM in #3837

New Contributors

• @sanxiyn made their first contribution in #3809
• @eekstunt made their first contribution in #3823
• @sstanovnik made their first contribution in #3370
• @mrdkucher made their first contribution in #3834

Full Changelog: v1.38.0...v1.39.0