How To Use Pydantic Ai

What Pydantic AI actually is

Skip Pydantic AI if you need a huge pre-built tool ecosystem (LangChain’s integrations are still an order of magnitude bigger), if you’re staying in JavaScript/TypeScript, or if you’re doing pure RAG over documents — LlamaIndex handles that with less glue code. For small typed extract-and-tool-call services, though, Pydantic AI is the least-painful option in Python today.

Installing

First working example

A real workflow — tools and dependencies

Gotchas

When NOT to use it