FastAPI framework, high performance, easy to learn, fast to code, ready for production. 🚀 Web APIs with Python type hints. 🐍 By @tiangolo 🤓
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Joined September 2020
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FastAPI Cloud, the official deployment platform for FastAPI apps, is now generally available! 🚀
FastAPI Cloud is now generally available! 🎉
Since we opened the public beta in June, thousands of you have joined and deployed thousands of apps. Your feedback helped us get here.
FastAPI Cloud is ready for your production apps. 🚀
fastapicloud.com/blog/fastap…
FastAPI 0.162.3 has official support for Python 3.15, including free-threaded 🧵🐍
github.com/fastapi/fastapi
FastAPI retweeted
The docs for @FastAPI, Typer, SQLModel and Asyncer now use the modern theme from @zensical 🍰
fastapi.tiangolo.com
New docs to develop FastAPI apps with AI coding agents: fastapi.tiangolo.com/ai-deve…
FastAPI retweeted
`fastapi deploy` is the cleanest command line deployment pattern since the early days of python apps on heroku
👩🏼🍳🤌🏼 – at Weehawken, NJ
FastAPI retweeted
I've been asked a lot if the slides I showed today @FastAPI Conf were available 😄 Here they are!
github.com/polarsource/fasta…
FastAPI retweeted
✨ Very first @FastAPI @FastAPIcloud conference in Amsterdam!
Huge thanks to @tiangolo and team for organizing. Can't wait to hear the talks this morning from @pydantic @OpenAI and more - and love the axolotl branding. – at Amsterdam, The Netherlands
If you're using Postgres in Python you're surely using @psycopg, come and chat with the maintainer! 🚀🐘
Daniele is heading to @FastAPI Conf 2026 in Amsterdam on the 28th October 🚀It’s the first ever official FastAPI conference! Come say hi if you’re there 👋 #FastAPI #Python #PostgreSQL #Psycopg #FastAPIConf #OpenSource
Have you missed anything from FastAPI and friends recently? 🕵️
What's there to get excited about in the future? 🤩
@tiangolo will open and close FastAPI Conf: everything we've built so far, and the big plans for the future. 👀
October 28, Amsterdam 🚲
fastapiconf.com
FastAPI retweeted
Just rehearsed my @FastAPI Conf talk for my wife. She didn’t understand a word, but she looked proud 😍 So I consider myself ready!
See you next week in Amsterdam 🇳🇱
Several releases in a row, the latest is 0.161.0, improving support for Pydantic models for forms.
fastapi.tiangolo.com/tutoria…
What's new and what's next from Google DeepMind? 🤖
Come and find out with @DynamicWebPaige at FastAPI Conf! 🤓
Join us next week, in Amsterdam, on October 28. 🚲
fastapiconf.com
Optional parameter models in FastAPI 0.159.0 ✨
No dates? No filter.
Send either date? Both are required.
Make the whole Pydantic model optional while keeping its fields required.
Works with query parameters, headers, and cookies. 🚀
fastapi.tiangolo.com/tutoria…
And now in FastAPI 0.158.0, support for multiple form models as well 📋️
fastapi.tiangolo.com/tutoria…
Pagination in one model. Filters in another. Both in the same FastAPI endpoint. ✨
FastAPI 0.157.0 lets you combine multiple query parameter models, alongside individual parameters and dependencies.
Works for headers and cookies too. 🚀
fastapi.tiangolo.com/tutoria…
Pagination in one model. Filters in another. Both in the same FastAPI endpoint. ✨
FastAPI 0.157.0 lets you combine multiple query parameter models, alongside individual parameters and dependencies.
Works for headers and cookies too. 🚀
fastapi.tiangolo.com/tutoria…
Several more small bug fix releases in a row (5 just today), the lastest is 0.156.8 🚀
github.com/fastapi/fastapi
FastAPI 0.156.0 fixes defaults when combining Pydantic Field() with Query(), Body(), and other request parameters. ✨
default_factory and validate_default now work as expected.
fastapi.tiangolo.com/release…
FastAPI 0.155.0 removes deprecated extra keyword arguments from request parameters. 🔥
Typos now raise an error instead of silently becoming schema metadata.
For custom schema properties, use json_schema_extra.
fastapi.tiangolo.com/tutoria…
FastAPI 0.154.0 adds explicit support for Pydantic's validate_default, union_mode, and fail_fast in request parameters. ✨
More control over validation, with editor autocomplete and type checking.
fastapi.tiangolo.com/release…