Pydantic AI Updates: June 24, 2026

1. Pydantic AI v2.0.0 ships as a stable release

Pydantic AI. The framework reached its stable v2.0.0 release on June 23, following seven beta versions, introducing a harness-first design that treats capabilities as a core primitive bundling tools, hooks, instructions, and model settings into composable units. The release keeps the core small and stable while pushing capabilities such as memory, guardrails, context management, file system access, and code mode into the Pydantic AI Harness, where they can iterate faster. The version also adds support for the gemini-embedding-2 model, AG-UI interrupt handling via DeferredTools, and an xai_max_turns parameter for extended xAI model support. Source