FastAPI

Modern Python APIs at startup speed

Python / Frameworks · OSS/MIT · 103k

Reviewed 2026-08-18 · last push 2026-10-20 · repo checked 2026-10-21

What's Good

Pydantic integration means request/response validation is declarative and automatic. OpenAPI docs generate from type hints. Async support is first-class. The dependency injection system is powerful without being magical.

The Catch

The ecosystem assumes you will integrate pieces yourself—no batteries-included ORM or auth. Async programming has its own learning curve.

Verdict

The Python API framework you will actually enjoy.

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