pydantic-ai
https://github.com/pydantic/pydantic-ai
Python
GenAI Agent Framework, the Pydantic way
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- Issues
- Gemini 2.5 Pro Streamed response has no content field (just streamed thinking parts)
- Greater introspection into the successful model when using FallbackModel
- Expose tool calling primitives
- pydantic-evals -- Custom Evaluation Aggregators
- Support MCP elicitations both in client and server
- Add Streaming Support to A2A
- Empty dynamic system prompt should not add a new message
- Anthropic `stop_reason` `pause_turn` is not handled correctly, resulting in errors with long-running built-in tools
- Can POML be used in PydanticAI?
- Support prefill by ending history with ModelResponse
- Docs
- Python not yet supported