Pydantic AI v2.57.0 (2026-10-15)

Pydantic AI releases published Pydantic AI v2.57.0 (2026-10-15). This automated release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: What's Changed ⚠️ Compatibility Notes Attach namespaced origin and tool call id metadata to BackgroundTools completions by @michaeldunn9 in 10196 Take GPT-Live realtime history, usage, and reply waits from the session core by @DouweM in 10083 Honour disable-model-invocation and user-invocable in Skills , and skip stray skill library paths by @DouweM in 10378 Take Gemini Live realtime history, usage, and reply waits from the session core by @DouweM in 10082 🚀 Features Add MetaProvider for Meta Muse models, with meta: using the Responses API by @mpfaffenberger in 10156 Add Harness ApprovalReviewer to let a model approve low-risk tool calls before a person sees them by @mpfaffenberger in 10143 Price requests at their reported service tier by @adtyavrdhn in 10244 Add dataset name to EvaluationReport by @jirikuncar in 10307 Forward MCP Apps tool results to AG-UI and Vercel AI frontends and…

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