pydantic-ai
https://github.com/pydantic/pydantic-ai
Python
GenAI Agent Framework, the Pydantic way
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- Issues
- fix(vercel-ai): strip retry suffix from UI errorText, preserve LLM cache
- Disable Streaming for ChatOpenAIModels
- Add option to disable streaming responses from OpenAIChatModels
- feat: add WebSocket mode for OpenAI Responses API
- feat: Add Anthropic `_20260209` web tools with server-tool replay
- Migrate remaining models to use `RequestUsage.extract()` via genai-prices
- operation.cost missing for OpenRouter with OpenAIChatModel + LiteLLMProvider
- feat(bedrock): support extra_headers via boto3 event hooks
- Add `pydantic_ai.prices.update_in_background()` and warn when model pricing data is missing
- Improve capabilities & hooks docs; promote `TemplateStr` to public `pydantic_ai.template`
- Docs
- Python not yet supported