Sebastián Ramírez
@tiangolo.com
Creator of @fastapi.tiangolo.com, Typer, SQLModel, Asyncer, etc 🚀
From 🇨🇴 in 🇩🇪
Open Source, APIs, and tools for data/ML 🤖
Building @fastapicloud.com ⚡️
From 🇨🇴 in 🇩🇪
Open Source, APIs, and tools for data/ML 🤖
Building @fastapicloud.com ⚡️
Here's Typer 0.23.1 with a small bug fix 🐛
Thanks Brian Kohan! 🙌
...and soon, dropping support for Python 3.9 🪓
typer.tiangolo.com
Thanks Brian Kohan! 🙌
...and soon, dropping support for Python 3.9 🪓
typer.tiangolo.com
Typer
Typer, build great CLIs. Easy to code. Based on Python type hints.
typer.tiangolo.com
February 13, 2026 at 10:16 AM
Here's Typer 0.23.1 with a small bug fix 🐛
Thanks Brian Kohan! 🙌
...and soon, dropping support for Python 3.9 🪓
typer.tiangolo.com
Thanks Brian Kohan! 🙌
...and soon, dropping support for Python 3.9 🪓
typer.tiangolo.com
You can't imagine how happy I am to finally be able to use the vertical bar (|) for type unions in the internal code 😁
FastAPI 0.129.0 drops support for Python 3.9, which reached its End Of Life months ago 🪓
Make sure you have a recent Python version, ideally 3.14 😎
fastapi.tiangolo.com
Make sure you have a recent Python version, ideally 3.14 😎
fastapi.tiangolo.com
FastAPI
FastAPI framework, high performance, easy to learn, fast to code, ready for production
fastapi.tiangolo.com
February 12, 2026 at 2:00 PM
You can't imagine how happy I am to finally be able to use the vertical bar (|) for type unions in the internal code 😁
In Typer 0.23.0 (just released 🍫), when there are errors, by default it no longer shows local variables, but you can opt-in to enable it typer.tiangolo.com/tutorial/exc...
Exceptions and Errors - Typer
Typer, build great CLIs. Easy to code. Based on Python type hints.
typer.tiangolo.com
February 11, 2026 at 3:31 PM
In Typer 0.23.0 (just released 🍫), when there are errors, by default it no longer shows local variables, but you can opt-in to enable it typer.tiangolo.com/tutorial/exc...
Typer 0.22.0 is out, dropping support for typer-slim, now it's all just typer, with Rich by default 🚀
If you don't know, don't worry, just keep using Typer 😎
If your app depends on typer-slim, change the dependency to typer 🔁
typer.tiangolo.com
If you don't know, don't worry, just keep using Typer 😎
If your app depends on typer-slim, change the dependency to typer 🔁
typer.tiangolo.com
Typer
Typer, build great CLIs. Easy to code. Based on Python type hints.
typer.tiangolo.com
February 11, 2026 at 11:15 AM
Typer 0.22.0 is out, dropping support for typer-slim, now it's all just typer, with Rich by default 🚀
If you don't know, don't worry, just keep using Typer 😎
If your app depends on typer-slim, change the dependency to typer 🔁
typer.tiangolo.com
If you don't know, don't worry, just keep using Typer 😎
If your app depends on typer-slim, change the dependency to typer 🔁
typer.tiangolo.com
We had a great chat at the @talkpython.fm podcast with @mkennedy.codes and some of my teammates: @patrick.wtf, @savannah.dev, @nucleonjohn.bsky.social🎙️
If you're curious about what goes underneath @fastapicloud.com, check it out 🎧️
If you're curious about what goes underneath @fastapicloud.com, check it out 🎧️
Latest episode is out, this time with the @fastapicloud.com team. cc @mkennedy.codes
#536: Fly inside FastAPI Cloud
talkpython.fm/episodes/sho...
#536: Fly inside FastAPI Cloud
talkpython.fm/episodes/sho...
Fly inside FastAPI Cloud
You've built your FastAPI app, it's running great locally, and now you want to share it with the world. But then reality hits -- containers, load balancers, HTTPS certificates, cloud consoles with 200...
talkpython.fm
February 11, 2026 at 9:59 AM
We had a great chat at the @talkpython.fm podcast with @mkennedy.codes and some of my teammates: @patrick.wtf, @savannah.dev, @nucleonjohn.bsky.social🎙️
If you're curious about what goes underneath @fastapicloud.com, check it out 🎧️
If you're curious about what goes underneath @fastapicloud.com, check it out 🎧️
Here's Typer 0.21.2 🎁
The highlight, @oxykodit.bsky.social added the official reference docs: typer.tiangolo.com/reference/
And updated the guide to build a Typer package to now use uv: typer.tiangolo.com/tutorial/pac...
The highlight, @oxykodit.bsky.social added the official reference docs: typer.tiangolo.com/reference/
And updated the guide to build a Typer package to now use uv: typer.tiangolo.com/tutorial/pac...
Reference - Typer
Typer, build great CLIs. Easy to code. Based on Python type hints.
typer.tiangolo.com
February 10, 2026 at 7:41 PM
Here's Typer 0.21.2 🎁
The highlight, @oxykodit.bsky.social added the official reference docs: typer.tiangolo.com/reference/
And updated the guide to build a Typer package to now use uv: typer.tiangolo.com/tutorial/pac...
The highlight, @oxykodit.bsky.social added the official reference docs: typer.tiangolo.com/reference/
And updated the guide to build a Typer package to now use uv: typer.tiangolo.com/tutorial/pac...
Reposted by Sebastián Ramírez
Here's FastAPI 0.128.7 with a couple of bug fixes and small features 🍰
...the plan is to release 0.129.0 today, dropping support for Python 3.9 🪓
github.com/fastapi/fast...
...the plan is to release 0.129.0 today, dropping support for Python 3.9 🪓
github.com/fastapi/fast...
GitHub - fastapi/fastapi: FastAPI framework, high performance, easy to learn, fast to code, ready for production
FastAPI framework, high performance, easy to learn, fast to code, ready for production - fastapi/fastapi
github.com
February 10, 2026 at 12:29 PM
Here's FastAPI 0.128.7 with a couple of bug fixes and small features 🍰
...the plan is to release 0.129.0 today, dropping support for Python 3.9 🪓
github.com/fastapi/fast...
...the plan is to release 0.129.0 today, dropping support for Python 3.9 🪓
github.com/fastapi/fast...
Reposted by Sebastián Ramírez
Several FastAPI releases during the weekend and today with internal refactors and a bug fix, the latest is 0.128.6 🤓
February 9, 2026 at 6:24 PM
Several FastAPI releases during the weekend and today with internal refactors and a bug fix, the latest is 0.128.6 🤓
Reposted by Sebastián Ramírez
How much do you like Friday releases? 🍫
FastAPI 0.128.3, compatible with the latest (and future) Starlette 🚀
github.com/fastapi/fast...
FastAPI 0.128.3, compatible with the latest (and future) Starlette 🚀
github.com/fastapi/fast...
GitHub - fastapi/fastapi: FastAPI framework, high performance, easy to learn, fast to code, ready for production
FastAPI framework, high performance, easy to learn, fast to code, ready for production - fastapi/fastapi
github.com
February 6, 2026 at 5:04 PM
How much do you like Friday releases? 🍫
FastAPI 0.128.3, compatible with the latest (and future) Starlette 🚀
github.com/fastapi/fast...
FastAPI 0.128.3, compatible with the latest (and future) Starlette 🚀
github.com/fastapi/fast...
Reposted by Sebastián Ramírez
Only 1 more day to fill the Typer developer survey! ⌨️
The results will guide future features and (breaking) changes. 🔥
forms.gle/XEH3NL2wqpFP...
The results will guide future features and (breaking) changes. 🔥
forms.gle/XEH3NL2wqpFP...
Typer developer survey
Help us understand how Typer is used, what is needed, and help guide its decisions ⌨️
forms.gle
February 5, 2026 at 7:33 PM
Only 1 more day to fill the Typer developer survey! ⌨️
The results will guide future features and (breaking) changes. 🔥
forms.gle/XEH3NL2wqpFP...
The results will guide future features and (breaking) changes. 🔥
forms.gle/XEH3NL2wqpFP...
Reposted by Sebastián Ramírez
Do you like Typer? ⌨️
Fill the Typer developer survey and help us define its future ✨
forms.gle/uT8SYQRoxuPz...
Fill the Typer developer survey and help us define its future ✨
forms.gle/uT8SYQRoxuPz...
Typer developer survey
Help us understand how Typer is used, what is needed, and help guide its decisions ⌨️
forms.gle
February 3, 2026 at 3:03 PM
Do you like Typer? ⌨️
Fill the Typer developer survey and help us define its future ✨
forms.gle/uT8SYQRoxuPz...
Fill the Typer developer survey and help us define its future ✨
forms.gle/uT8SYQRoxuPz...
Here's SQLModel 0.0.32, fix support for Annotated fields with @pydantic.dev 2.12+ 🐛
Thanks @vimota.bsky.social ! 🙌
And thanks @patrick.wtf , @oxykodit.bsky.social , and YuriiMotov for the work and help. 🍰
sqlmodel.tiangolo.com
Thanks @vimota.bsky.social ! 🙌
And thanks @patrick.wtf , @oxykodit.bsky.social , and YuriiMotov for the work and help. 🍰
sqlmodel.tiangolo.com
SQLModel
SQLModel, SQL databases in Python, designed for simplicity, compatibility, and robustness.
sqlmodel.tiangolo.com
February 1, 2026 at 6:30 PM
Here's SQLModel 0.0.32, fix support for Annotated fields with @pydantic.dev 2.12+ 🐛
Thanks @vimota.bsky.social ! 🙌
And thanks @patrick.wtf , @oxykodit.bsky.social , and YuriiMotov for the work and help. 🍰
sqlmodel.tiangolo.com
Thanks @vimota.bsky.social ! 🙌
And thanks @patrick.wtf , @oxykodit.bsky.social , and YuriiMotov for the work and help. 🍰
sqlmodel.tiangolo.com
It feels so good to see 0 issues, 0 PRs ...in one of the big repos!
This one recently got 40k GitHub stars 🤩
This one recently got 40k GitHub stars 🤩
The full-stack-fastapi-template now has 40k+ GitHub stars, 0 open PRs, 0 open issues 🤯
To celebrate: version 0.10.0 🥂
Highlight: alejsdev set it up as a uv workspace, and a bun monorepo, now all works from the top level 🚀
github.com/fastapi/full...
To celebrate: version 0.10.0 🥂
Highlight: alejsdev set it up as a uv workspace, and a bun monorepo, now all works from the top level 🚀
github.com/fastapi/full...
github.com
January 23, 2026 at 4:59 PM
It feels so good to see 0 issues, 0 PRs ...in one of the big repos!
This one recently got 40k GitHub stars 🤩
This one recently got 40k GitHub stars 🤩
Deploy to FastAPI Cloud right from CI 🚀
If you have access to FastAPI Cloud, now you can also use deploy tokens, deploy right from CI ✨
fastapicloud.com/docs/advance...
Thanks to @marco.ooo that lead the effort! 🚀
fastapicloud.com/docs/advance...
Thanks to @marco.ooo that lead the effort! 🚀
Deploy Tokens
Documentation for FastAPI Cloud, a platform for deploying FastAPI applications.
fastapicloud.com
January 15, 2026 at 3:00 PM
Deploy to FastAPI Cloud right from CI 🚀
With great LLMs comes great responsibility 😅
Avoid a Human Effort Denial of Service 🤖
Avoid a Human Effort Denial of Service 🤖
January 11, 2026 at 10:53 PM
With great LLMs comes great responsibility 😅
Avoid a Human Effort Denial of Service 🤖
Avoid a Human Effort Denial of Service 🤖
LLMs are great at translating, when properly guided ✨
If more native speakers help review, there will be @fastapi.tiangolo.com docs in:
French
Japanese
Traditional Chinese
Turkish
Simplified Chinese
Korean
Ukrainian
github.com/fastapi/fast...
If more native speakers help review, there will be @fastapi.tiangolo.com docs in:
French
Japanese
Traditional Chinese
Turkish
Simplified Chinese
Korean
Ukrainian
github.com/fastapi/fast...
January 11, 2026 at 6:35 PM
LLMs are great at translating, when properly guided ✨
If more native speakers help review, there will be @fastapi.tiangolo.com docs in:
French
Japanese
Traditional Chinese
Turkish
Simplified Chinese
Korean
Ukrainian
github.com/fastapi/fast...
If more native speakers help review, there will be @fastapi.tiangolo.com docs in:
French
Japanese
Traditional Chinese
Turkish
Simplified Chinese
Korean
Ukrainian
github.com/fastapi/fast...
Now all the @fastapi.tiangolo.com and friends repos are fully managed by uv (as uv projects), because uv is awesome.
It can even handle all our quirks. For development, publishing, scripts, CI, etc.
Use uv. ✨
Thanks @nucleonjohn.bsky.social for the migration! 🙌
It can even handle all our quirks. For development, publishing, scripts, CI, etc.
Use uv. ✨
Thanks @nucleonjohn.bsky.social for the migration! 🙌
January 10, 2026 at 10:48 PM
Now all the @fastapi.tiangolo.com and friends repos are fully managed by uv (as uv projects), because uv is awesome.
It can even handle all our quirks. For development, publishing, scripts, CI, etc.
Use uv. ✨
Thanks @nucleonjohn.bsky.social for the migration! 🙌
It can even handle all our quirks. For development, publishing, scripts, CI, etc.
Use uv. ✨
Thanks @nucleonjohn.bsky.social for the migration! 🙌
There's now a @fastapicloud.com account here on Bluesky 🤓
Hello ~world~ cloud! ⚡️
January 10, 2026 at 8:04 PM
There's now a @fastapicloud.com account here on Bluesky 🤓
Typer
Typer, build great CLIs. Easy to code. Based on Python type hints.
typer.tiangolo.com
January 6, 2026 at 11:24 AM
This past year:
So many releases of @fastapi.tiangolo.com and friends ✨
Got the best team and first waves of private beta users in FastAPI Cloud 🚀
🐍 I gave keynotes at the Python conferences of:
Europe
Taiwan
Japan
Spain
Brazil
We're building so many cool things! Happy New Year! 🎆
So many releases of @fastapi.tiangolo.com and friends ✨
Got the best team and first waves of private beta users in FastAPI Cloud 🚀
🐍 I gave keynotes at the Python conferences of:
Europe
Taiwan
Japan
Spain
Brazil
We're building so many cool things! Happy New Year! 🎆
December 31, 2025 at 5:50 PM
This past year:
So many releases of @fastapi.tiangolo.com and friends ✨
Got the best team and first waves of private beta users in FastAPI Cloud 🚀
🐍 I gave keynotes at the Python conferences of:
Europe
Taiwan
Japan
Spain
Brazil
We're building so many cool things! Happy New Year! 🎆
So many releases of @fastapi.tiangolo.com and friends ✨
Got the best team and first waves of private beta users in FastAPI Cloud 🚀
🐍 I gave keynotes at the Python conferences of:
Europe
Taiwan
Japan
Spain
Brazil
We're building so many cool things! Happy New Year! 🎆
I just migrated the docs for Asyncer from Material for MkDocs to @zensical.org ✨
I was expecting a challenge, I was disappointed, it was too easy. 😂
Install and run, that's it. All the configs unchanged, even the CLI preserves the exact same commands. ☕️
asyncer.tiangolo.com
I was expecting a challenge, I was disappointed, it was too easy. 😂
Install and run, that's it. All the configs unchanged, even the CLI preserves the exact same commands. ☕️
asyncer.tiangolo.com
Index - Asyncer
Asyncer, async and await, focused on developer experience.
asyncer.tiangolo.com
December 29, 2025 at 8:37 PM
I just migrated the docs for Asyncer from Material for MkDocs to @zensical.org ✨
I was expecting a challenge, I was disappointed, it was too easy. 😂
Install and run, that's it. All the configs unchanged, even the CLI preserves the exact same commands. ☕️
asyncer.tiangolo.com
I was expecting a challenge, I was disappointed, it was too easy. 😂
Install and run, that's it. All the configs unchanged, even the CLI preserves the exact same commands. ☕️
asyncer.tiangolo.com
Here's SQLModel 0.0.31, dropping support for Pydantic v1 ⚰️
Now @pydantic.dev 2.7.0 or above is required ⬆️
sqlmodel.tiangolo.com
Now @pydantic.dev 2.7.0 or above is required ⬆️
sqlmodel.tiangolo.com
SQLModel
SQLModel, SQL databases in Python, designed for simplicity, compatibility, and robustness.
sqlmodel.tiangolo.com
December 28, 2025 at 12:37 PM
Here's SQLModel 0.0.31, dropping support for Pydantic v1 ⚰️
Now @pydantic.dev 2.7.0 or above is required ⬆️
sqlmodel.tiangolo.com
Now @pydantic.dev 2.7.0 or above is required ⬆️
sqlmodel.tiangolo.com
I made the first public announcement of @fastapi.tiangolo.com 7 years ago, around these dates 🎂
It was intended as a gift 🎁
Cool stuff coming next year in FastAPI for you.
Here's to the next to come! 🥂
It was intended as a gift 🎁
Cool stuff coming next year in FastAPI for you.
Here's to the next to come! 🥂
FastAPI 0.128.0 drops support for pydantic.v1 ⚰️
Now only @pydantic.dev v2 is supported ⬆️
This will unlock many things ✨
fastapi.tiangolo.com
Now only @pydantic.dev v2 is supported ⬆️
This will unlock many things ✨
fastapi.tiangolo.com
FastAPI
FastAPI framework, high performance, easy to learn, fast to code, ready for production
fastapi.tiangolo.com
December 27, 2025 at 3:36 PM
I made the first public announcement of @fastapi.tiangolo.com 7 years ago, around these dates 🎂
It was intended as a gift 🎁
Cool stuff coming next year in FastAPI for you.
Here's to the next to come! 🥂
It was intended as a gift 🎁
Cool stuff coming next year in FastAPI for you.
Here's to the next to come! 🥂