Here's FastAPI 0.119.0 🚀 With support for both @pydantic.dev v2 and v1 on the same app, at the same time 🤯 This is just so you can migrate to Pydantic v2 if you haven't done it yet, here's your (last) chance! 🤓 Pydantic v1 is now deprecated ⛔️ Read more fastapi.tiangolo.com/how-to/migra...

Who's hungry? There's pi 🥧 FastAPI 0.118.3 has official support for Python 3.14 🎉 Big thanks to @oxykodit.bsky.social for a long debugging and preparation process! 🙌 And shoutout to @1st1.dev and Fantix from @geldata.com for the new httptools with support for 3.14 🙇

Here's another quick FastAPI bug fix release, 0.118.2 🚀 This fixes a use case with Pydantic models using discriminated unions in the body. 🐛 (If you don't understand or use that, no need to worry about it either 😎) Thanks François Voron! 🙌 And thanks @patrick.wtf and Yurii! 🍰

Here's FastAPI 0.118.1, with compatibility for the latest @pydantic.dev. 🚀 This one had the combined effort of the community, the @pydantic.dev team, and the @fastapi.tiangolo.com team, all together. 🙌 github.com/fastapi/fast...

FastAPI 0.118.0 was just released 🎁 🐛 This fixes a bug when using a StreamingResponse and dependencies with yield or UploadFile. Details: Now the exit code of dependencies with yield runs after the response is sent back. If you want to read more: fastapi.tiangolo.com/advanced/adv...

What's a better weekend treat than a release packed with features and bug fixes? 🍰 FastAPI 0.117.0 has too many things to list. ✨ Check the release notes: fastapi.tiangolo.com/release-notes/ Shoutout to YuriiMotov for the work reviewing and tweaking PRs! 🙌

Just released, fastapi-cli version 0.0.12 🤓 With support for the PORT environment variable, used by many cloud providers. 🚀 Just use: ✨ fastapi run ✨ Thanks Marco Burro! 🙌

Here's FastAPI 0.116.2 with support for the latest Starlette 🚀 github.com/fastapi/fast...

Now you can use the entrypoint syntax with the FastAPI CLI 🚀 (fastapi-cli version 0.0.11) Thanks @patrick.wtf! 🙌

I was just checking, and @fastapi.tiangolo.com has been downloaded 4,297,849 times... in the last day. 4M+ times a day. 🚀 That also means that, since you started reading this post, it has been downloaded around 400 times. 🤯 pypistats.org/packages/fas...

FastAPI is now officially the most used web framework by Python developers 😁🚀🎉 From the Python Developer Survey 🐍 blog.jetbrains.com/pycharm/2025...

Love to see: - @fastapi.tiangolo.com usage up 9% - 1/3 contributing to open source - New developers choosing Python!

"The +5 point increase for FastAPI is one of the most significant shifts in the web framework space." "This signals a strong trend towards using Python for building performant APIs and reflects the overall strength of the Python ecosystem." 🤯🐍🚀 survey.stackoverflow.co/2025/technol...

"[At OpenAI] Pretty much everything operates around @fastapi.tiangolo.com to create APIs and @pydantic.dev for validation" 🚀 - Calvin French-Owen calv.info/openai-refle...

Here's FastAPI 0.115.14 🚀 @patrick.wtf fixed support for unions of @pydantic.dev models in Form data. 🐛🎉 (This will make it easier to implement single sign-on 😉) github.com/fastapi/fast...

The cake was not a lie.

Here's FastAPI 0.115.13 with a bunch of bug fixes and tweaks 🎁 Special thanks to Yurii for all the work handling discussions and PRs! 🙌 github.com/fastapi/fast...

BIG NEWS ✨ I started a company with an amazing team and the best backers 🤓 We're building FastAPI Cloud 🚀 Designed for @fastapi.tiangolo.com and Python 🐍 One command: fastapi deploy We take care of the rest 😎 You code. We cloud. Join the waiting list! ☕️ fastapicloud.com

FastAPI now has 84k GitHub stars ✨ FastAPI is now the most starred backend framework 🎉 ...not only in Python, in all programming languages 🤯 Thanks to all who inspired it and paved the way 🙌 And thank you for adopting it! 🍰☕️ github.com/fastapi/fast...

Small bug fix release, 0.115.12 🐛 github.com/fastapi/fast... This fixes support for Pydantic models in header parameters using fields with underscores 🚀 fastapi.tiangolo.com/tutorial/hea...

Do you like weekend releases? Here's FastAPI 0.115.11 ☕️ ✨ New docs and first-class support for custom validators: fastapi.tiangolo.com/tutorial/que... 🐛 This fixes a bug introduced in the last release (from yesterday) that would break those custom validators.

Another tiny release, more bug fixes and upgrades, FastAPI 0.115.10 🤓 Improved compatibility with the (future) @pydantic.dev 2.11 and support for the latest Starlette 😎 github.com/fastapi/fast...

Tiny bug fix FastAPI release 🤏 0.115.9 github.com/fastapi/fast...

Here's FastAPI 0.115.8, with official support for Python 3.13 🐍😎 Python 3.13 tests updated and enabled on CI. And a couple of bug fixes. 🐛 github.com/fastapi/fast...

These past days @fastapi.tiangolo.com surpassed Laravel (PHP) and Gin (Go) in GitHub stars 🤩 Python has the two most starred web backend frameworks in all languages: Django and FastAPI 🐍🚀 github.com/fastapi/fast...

Tiny release, FastAPI 0.115.7 🍰 Upgrading several dependencies, including the latest Starlette 🚀 github.com/fastapi/fast...

FastAPI has been downloaded 1 billion times. 😮🥳🎉 1,000,000,000 downloads. That's a lot! 😁🚀 github.com/fastapi/fast... You can check it in pepy.tech/projects/fas...

¿Hablas español? Te tengo un regalo. 🎁 Ahora TODA la documentación de FastAPI está traducida al español. 🎉 Ya no son 22 páginas, sino todas las 109, traducidas. 🤓 fastapi.tiangolo.com/es/

A tiny release of fastapi-cli, 0.0.7, to not disable other loggers. 🐛 This comes included when you install fastapi[standard] 🤓 github.com/fastapi/fast...

The command fastapi (the FastAPI CLI) now looks so much nicer 😎 It now uses @patrick.wtf's rich-toolkit 🎨 To get it, upgrade your dependencies with fastapi[standard] 🤓 Or manually upgrade the package fastapi-cli to the latest version: 0.0.6 🚀

A small one, FastAPI 0.115.6 🐛 This fixes a bug that prevented having the full traceback when a sync dependency with yield raised an exception in Python 3.11. 🤓 Thanks to @marcelotryle.bsky.social for the help with this one! 🙌 github.com/fastapi/fast...

{"message": "Hello world!"}