PydanticAI
ai.pydantic.dev
An agent framework built by the Pydantic team that brings type safety and structured validation to LLM applications, ensuring model outputs conform to defined schemas at runtime.
Why it is useful
Type-safe LLM outputs are the missing piece in most agent frameworks — when the model returns malformed JSON or the wrong structure, most frameworks crash or silently produce wrong results. PydanticAI validates and retries automatically, and the integration with Pydantic models means your IDE gives you autocomplete on AI outputs like any other typed Python object.