Pydantic AI Updates: August 29, 2026

1. Pydantic AI v2.36.0 Adds a Durable Operation Decorator and Realtime Audio Streaming

Pydantic AI. Pydantic AI released v2.36.0, which introduces a @durable_operation decorator backed by a public backend API so third-party durable execution engines can hook into capabilities, with operation naming made explicit and mandatory on the decorator. The release assigns stable InstructionPart.id identifiers to instruction components and extends RealtimeSession.send_audio() to accept async iterables, moving the voice example to a new listentome sample. It also adds --mcp-config support and tool-call streaming to the clai command-line interface, and fixes TestModel generation for narrow exclusive numeric bounds along with bare ToolDefinition projection into Prefect cache keys. Source