Pydantic AI Tutorial 2026 (refreshed): Type-Safe Python Agents With Automatic Validation
Pydantic AI is a Python agent framework from the Pydantic team: install it with pip install pydantic-ai, declare a Pydantic BaseModel as your agent’s output type, and the framework validates the model’s response and retries automatically when validation fails — no manual JSON parsing, no schema wrestling. This page was first published in April 2026. The October 2026 revision below re-checked every copy-paste surface on it against pydantic-ai 2.54.0 and the vendor’s current documentation, because four of the strings the original page carried no longer resolve at all. ...