head to head · open source
fastapi vs kiota
fastapi has 104,566 GitHub stars, 10,179 forks, 78 open issues and last shipped yesterday. kiota has 3,844 stars, 346 forks, 222 open issues and last shipped yesterday. fastapi leads on adoption by 2,620% (104,566 vs 3,844 stars). fastapi is written in Python under MIT; kiota is written in C# under MIT. fastapi has attracted 10% as many forks as stars, kiota 9%. fastapi was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (api, openapi, openapi3), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| fastapi | kiota | |
|---|---|---|
| GitHub stars | ★ 105K | ★ 3.8K |
| License | MIT | MIT |
| Written in | Python | C# |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 10K | ⑂ 346 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick fastapi if
- You weight community size — 105K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick kiota if
- You want the kiota feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C#
- You evaluated both and kiota fits your workflow better
About fastapi
FastAPI framework, high performance, easy to learn, fast to code, ready for production Documentation : Source Code : FastAPI is a modern, fast (high performance), web framework for building APIs with Python based on standard Python type hints. The key features are: Fast : Very high performance, on par with NodeJS and Go (thanks to Starlette and Pydantic). One of the fastest Python frameworks available. Fast to code : Increase the speed to develop features by about 200% to 300%. Fewer bugs : Reduce about 40% of human (developer) induced errors. Intuitive : Great editor support. Completion everywhere. Less time…
read the full fastapi overview →
About kiota
Project Kiota is a command line tool for generating an API client to call any OpenAPI described API you are interested in. The goal is to eliminate the need to take a dependency on a different API SDK for every API that you need to call. Kiota API clients provide a strongly typed experience with all the features you expect from a high quality API SDK, but without having to learn a new library for every HTTP API. This library builds on top of the Microsoft.OpenAPI.NET library to ensure comprehensive support for APIs that use OpenAPI descriptions. One of the goals of the project is to provide the best code…
read the full kiota overview →
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Frequently asked questions
Is fastapi or kiota more popular?
fastapi has 104,566 GitHub stars and kiota has 3,844. fastapi has the larger community by that measure.
Are fastapi and kiota free?
Both are open source. fastapi is licensed under MIT and kiota under MIT. Neither carries a licence fee.
What is the difference between fastapi and kiota?
fastapi is written in Python and kiota in C#. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, fastapi or kiota?
Choose fastapi if you want the larger community (104,566 stars) or its MIT licence terms. Choose kiota if its feature set, stack or MIT licence fits better. Both are self-hostable.