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Pydantic AI Updates: August 21, 2026

pydantic-ai release anthropic

1. Pydantic AI v2.33.0 Requires Anthropic SDK 1.0

Pydantic AI. Pydantic AI released v2.33.0, which now requires and supports anthropic>=1.0.0. The change tracks the Anthropic SDK’s migration to httpx2, so projects pinning older Anthropic versions will need to upgrade. It is the notable dependency shift in the current release line. Source

2. Patch Releases v2.32.1 and v2.32.2 Fix Callables and Anthropic Thinking Blocks

Pydantic AI. Two patch releases landed ahead of v2.33.0. v2.32.1 fixed synchronous callback restrictions, Anthropic thinking blocks, and callable function models, while v2.32.2 addressed async callable handling and YouTube URL recognition. The updates target stability in existing functionality rather than adding features. Source