head to head · open source
fastapi vs openapi-typescript
fastapi has 104,566 GitHub stars, 10,179 forks, 78 open issues and last shipped yesterday. openapi-typescript has 8,426 stars, 677 forks, 300 open issues and last shipped 1 months ago. fastapi leads on adoption by 1,141% (104,566 vs 8,426 stars). fastapi is written in Python under MIT; openapi-typescript is written in TypeScript under MIT. fastapi has attracted 10% as many forks as stars, openapi-typescript 8%. 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, 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 | openapi-typescript | |
|---|---|---|
| GitHub stars | ★ 105K | ★ 8.4K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-09-25 |
| Forks | ⑂ 10K | ⑂ 677 |
| 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 openapi-typescript if
- You want the openapi-typescript feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and openapi-typescript 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 openapi-typescript
openapi typescript Tools for consuming OpenAPI schemas in TypeScript. 📦 Packages Generate TypeScript types from static OpenAPI schemas Ultra fast fetching for TypeScript generated automatically from your OpenAPI schema. ⭐ Sponsors 🥇 Gold Sponsors 🥈 Silver Sponsors Backers Become a sponsor by supporting this project on OpenCollective! 🤝 Contributing Contributions are appreciated and welcome! See the appropriate guide for each package: Contributing to openapi typescript Contributing to openapi fetch Contributing to docs ♥️ Thanks Thanks to the Project Sponsors for keeping this project going! Thanks to dozens…
read the full openapi-typescript overview →
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Frequently asked questions
Is fastapi or openapi-typescript more popular?
fastapi has 104,566 GitHub stars and openapi-typescript has 8,426. fastapi has the larger community by that measure.
Are fastapi and openapi-typescript free?
Both are open source. fastapi is licensed under MIT and openapi-typescript under MIT. Neither carries a licence fee.
What is the difference between fastapi and openapi-typescript?
fastapi is written in Python and openapi-typescript in TypeScript. 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 openapi-typescript?
Choose fastapi if you want the larger community (104,566 stars) or its MIT licence terms. Choose openapi-typescript if its feature set, stack or MIT licence fits better. Both are self-hostable.