pydantic/pydantic-ai v1.79.0

v1.79.0 (2026-04-09)

on GitHub

What's Changed

🚀 Features

• Full support for AG-UI 0.1.13 and 0.1.15: reasoning, multi-modal, dump_messages by @dsfaccini in #3971
• Replace HTTP client cache with create_async_http_client and context manager by @dsfaccini in #4421
• Add apply() to AbstractCapability, CombinedCapability, and WrapperCapability by @DouweM in #5022

🐛 Bug Fixes

• fix: update internal $refs in renamed schema defs, handle missing keywords, and detect semantically different defs by @Ricardo-M-L in #5020
• fix: force streaming in run() when capability/hook overrides wrap_run_event_stream by @DouweM in #5028
• Fix on_node_run_error and after_node_run hook recovery by @DouweM in #5023
• fix: add missing space in provider UserError messages by @graydeon in #4976

New Contributors

• @15r10nk made their first contribution in #4108
• @graydeon made their first contribution in #4976

Full Changelog: v1.78.0...v1.79.0