head to head · open source
fastapi vs kiota
fastapi has 102,409 GitHub stars, 9,906 forks, 78 open issues and last shipped 4 days ago. kiota has 3,823 stars, 334 forks, 222 open issues and last shipped yesterday. fastapi leads on adoption by 2,579% (102,409 vs 3,823 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%. kiota 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 | ★ 102K | ★ 3.8K |
| License | MIT | MIT |
| Written in | Python | C# |
| Last push | 2026-09-14 | 2026-09-17 |
| Forks | ⑂ 9.9K | ⑂ 334 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick fastapi if
- You weight community size — 102K 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 is an MIT licensed, high performance Python web framework for building APIs with standard Python type hints, aimed at Python developers and teams that need production ready HTTP services with automatic OpenAPI documentation.
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 generato…
read the full kiota overview →
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Frequently asked questions
Is fastapi or kiota more popular?
fastapi has 102,409 GitHub stars and kiota has 3,823. 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 (102,409 stars) or its MIT licence terms. Choose kiota if its feature set, stack or MIT licence fits better. Both are self-hostable.