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build(deps): update pydantic-ai requirement from <=2.52.0,>=2.9.0 to >=2.9.0,<=2.57.0 - #64

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Updates the requirements on pydantic-ai to permit the latest version.

Release notes

Sourced from pydantic-ai's releases.

v2.57.0 (2026-10-15)

What's Changed

⚠️ Compatibility Notes

🚀 Features

🐛 Bug Fixes

New Contributors

Full Changelog: pydantic/pydantic-ai@v2.56.0...v2.57.0

Changelog

Sourced from pydantic-ai's changelog.


description: "Pydantic AI upgrade guide and changelog: the breaking changes in each release, how to install V2, and the recommended path to migrate your code from V1."

Upgrade Guide

In September 2025, Pydantic AI reached V1 and committed to API stability: no changes that break your code until V2. V2 is now available, collecting the breaking and behavior changes that stability guarantee didn't allow. This guide is the canonical place to learn what's in V2, how to install it, and how to upgrade; for the guarantees behind these version numbers, see the Version Policy.

Breaking Changes

Here's a filtered list of the breaking changes for each version to help you upgrade Pydantic AI.

v2.0.0 (2026-06-23)

The stable V2.0 release. There are no new breaking or behavior changes since the betas; the full breaking-change list and recommended upgrade path are in the v2.0.0b1 entry below. Install it with:

uv add pydantic-ai

v2.0.0b7 (2026-06-10)

The seventh V2 beta, forked from v1.107.0. There are no new V2 breaking or behavior changes since v2.0.0b6 below — everything in that entry applies unchanged — but this beta picks up the latest V1 release on top, which adds Claude Fable 5 / Mythos 5 model support and OpenRouter prompt caching (CachePoint), plus known_model_names() and Anthropic fixes; see the v1.107.0 release notes for the full list.

Install it the same way, pinning the exact pre-release version:

pip/uv-add "pydantic-ai==2.0.0b7"

For the full breaking-change list and the recommended upgrade path, see the v2.0.0b1 entry below; the only difference is that the latest V1 to upgrade through first is now v1.107.0.

v2.0.0b6 (2026-06-04)

The sixth V2 beta, forked from v1.106.0. There are no new V2 breaking or behavior changes since v2.0.0b5 below — everything in that entry applies unchanged — but this beta picks up the latest V1 release on top, which adds api_host/timeout configuration and base seed mapping for the xAI provider, plus streaming and data-URI handling fixes; see the v1.106.0 release notes for the full list.

Install it the same way, pinning the exact pre-release version:

pip/uv-add "pydantic-ai==2.0.0b6"

For the full breaking-change list and the recommended upgrade path, see the v2.0.0b1 entry below; the only difference is that the latest V1 to upgrade through first is now v1.106.0.

v2.0.0b5 (2026-06-02)

The fifth V2 beta, forked from v1.105.0. There are no new V2 breaking or behavior changes since v2.0.0b4 below — everything in that entry (including the prepare-callbacks change) still applies — but this beta picks up the latest V1 release on top, which adds on-demand (deferred-loading) capabilities and Grok 4.3 reasoning_effort support, plus GoogleModelSettings.google_cached_content and Temporal gateway/ fixes; see the v1.105.0 release notes for the full list.

Install it the same way, pinning the exact pre-release version:

... (truncated)

Commits
  • 54a31ab Make /theme work in the clai2 web UI (#10277)
  • c318927 Add code mode and speculation toggles to the clai2 web UI, with a read-only...
  • 1f034ef Remove pre-release Agent.connect() and Responses WebSocket APIs (#10370)
  • 27b41ca Stream token counts in the clai2 web UI while a turn runs (#10275)
  • 253240f Show the Pydantic logo in the clai2 web UI (#10274)
  • 3650d9e Use Pydantic brand colours in the clai2 web UI, in dark and light mode (#10...
  • 9fd6f67 Group tool calls and center the new-session composer in the clai2 web UI (#...
  • d16c4a6 Add the clai2 web UI: a sessions sidebar, streaming chat, tool cards, and a...
  • b210940 Add an opt-in web plugin to clai2 that serves the session to a browser, w...
  • 2c3303c Let clai2 plugins drive the prompt with PluginHost.send_input, `interrupt...
  • Additional commits viewable in compare view

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Updates the requirements on [pydantic-ai](https://github.com/pydantic/pydantic-ai) to permit the latest version.
- [Release notes](https://github.com/pydantic/pydantic-ai/releases)
- [Changelog](https://github.com/pydantic/pydantic-ai/blob/main/docs/changelog.md)
- [Commits](pydantic/pydantic-ai@v2.9.0...v2.57.0)

---
updated-dependencies:
- dependency-name: pydantic-ai
  dependency-version: 2.57.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot added dependencies Pull requests that update a dependency file python Pull requests that update python code labels Oct 20, 2026

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