Introducing Logfire

From the team behind Pydantic, Logfire is a new type of observability platform that empowers developers to understand their applications like never before.

Learn more
> pip install logfire

Respected builders of open source, for Python & beyond

Pydantic is built on the pillars of open source: transparency, collaboration and excellence. Our origins inform every product we craft. Whether it’s a community project or enterprise solution, developer experience is our cornerstone.

pydantic

pydantic

The most popular data validation library for Python

FastUI

A new way to build web application UIs

arq

Fast job queuing and RPC in Python

speedate

Date, time and duration parsing for Rust

jiter

The fast, iterable JSON parser

The Pydantic Library is used and trusted by some of the biggest organizations in the world — and millions of individual developers, too.

We use Pydantic across key parts of our research and products, and it has accelerated our work considerably.

Atty Eleti Member of Technical Staff at OpenAI

Pydantic is incredibly powerful and a must use tool for AI engineers.

Logan Kilpatrick Lead product for Google AI Studio

We use Pydantic across key parts of our research and products, and it has accelerated our work considerably.

Atty Eleti Member of Technical Staff at OpenAI

Integrations that run on the Datadog Agent use Pydantic models that are generated from an OpenAPI spec to validate configuration which has drastically reduced customer confusion and support cases that we have to triage.

Ofek Lev Senior Software Engineer at Datadog

If you're not using Python yet, you should. If you're not using Pydantic yet with Python, you should. Pydantic is the data backbone of FastAPI, but even if you don't use FastAPI, Pydantic is extremely useful. There's always data, and handling data with Pydantic is several times more efficient and safer than without it and much more enjoyable.

Sebastián Ramírez creator of FastAPI
OUR MISSION

Driven by curiosity, frustration and coffee

Learn more about the creators of Pydantic, our mission and open source ethos. And see how you can get involved.

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