head to head · open source
fastapi vs autorest
fastapi has 104,566 GitHub stars, 10,179 forks, 78 open issues and last shipped yesterday. autorest has 4,790 stars, 735 forks, 25 open issues and last shipped 29 days ago. fastapi leads on adoption by 2,083% (104,566 vs 4,790 stars). fastapi is written in Python under MIT; autorest is written in TypeSpec under MIT. fastapi has attracted 10% as many forks as stars, autorest 15%. fastapi was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (openapi, python), 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 | autorest | |
|---|---|---|
| GitHub stars | ★ 105K | ★ 4.8K |
| License | MIT | MIT |
| Written in | Python | TypeSpec |
| Last push | 2026-11-02 | 2026-10-05 |
| Forks | ⑂ 10K | ⑂ 735 |
| 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 autorest if
- You want the autorest feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeSpec
- You evaluated both and autorest 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 autorest
⚠️ Deprecation Notice AutoRest is deprecated and will be retired on July 1, 2026. AutoRest is no longer under active development. No new features, language generators, or plugins will be added. ✅ Recommended replacement: TypeSpec The recommended successor to AutoRest is TypeSpec — a modern, actively developed API description language and code generation platform. 📌 Deprecation tracking issue for more details: AutoRest The AutoRest tool generates client libraries for accessing RESTful web services. Input to AutoRest is a spec that describes the REST API using the OpenAPI Specification format. Release notes…
read the full autorest overview →
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Frequently asked questions
Is fastapi or autorest more popular?
fastapi has 104,566 GitHub stars and autorest has 4,790. fastapi has the larger community by that measure.
Are fastapi and autorest free?
Both are open source. fastapi is licensed under MIT and autorest under MIT. Neither carries a licence fee.
What is the difference between fastapi and autorest?
fastapi is written in Python and autorest in TypeSpec. 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 autorest?
Choose fastapi if you want the larger community (104,566 stars) or its MIT licence terms. Choose autorest if its feature set, stack or MIT licence fits better. Both are self-hostable.