head to head · open source
fastapi vs WindsurfAPI
fastapi has 104,566 GitHub stars, 10,179 forks, 78 open issues and last shipped yesterday. WindsurfAPI has 3,121 stars, 636 forks, 7 open issues and last shipped 2 days ago. fastapi leads on adoption by 3,250% (104,566 vs 3,121 stars). fastapi is written in Python under MIT; WindsurfAPI is written in JavaScript under MIT. fastapi has attracted 10% as many forks as stars, WindsurfAPI 20%. fastapi was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | WindsurfAPI | |
|---|---|---|
| GitHub stars | ★ 105K | ★ 3.1K |
| License | MIT | MIT |
| Written in | Python | JavaScript |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 10K | ⑂ 636 |
| 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 WindsurfAPI if
- You want the WindsurfAPI feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and WindsurfAPI 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 WindsurfAPI
WindsurfAPI · DevinAPI 把 Windsurf / Devin 的 100+ AI 模型（Claude、GPT、Gemini、DeepSeek、Kimi、GLM、SWE…）变成 OpenAI Chat / Responses / Anthropic / Gemini 四套标准 API。零 npm 运行时依赖。 历史账本 · 把 1387 次提交、196 个版本、82 个 PR、180 个 issue 摊开给你看：时间线主账 + 贡献者分析 + Git 树三形态（竖/横/环）+ 自伤与返工全记录 —— 打开可视化账本 （纯原生渲染，零依赖） · English 声明 没点 Star 和 Follow 的 ：严禁商业使用、转售、代部署、挂后台对外提供服务、包装成中转服务出售。 点了 Star 和 Follow 的 ：随便用，我睁一只眼闭一只眼。 代码本体按 MIT License 开源（见 LICENSE），上面这段是作者个人态度。 把 Windsurf（原 Codeium，现 Devin Desktop）的 AI 模型变成 四套标准 API 同时兼容 ： POST /v1/chat/completions — OpenAI 兼容 任何 OpenAI SDK 直接用 POST /v1/completions — OpenAI 旧 Completions （非流式； prompt 包成一条 user…
read the full WindsurfAPI overview →
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Frequently asked questions
Is fastapi or WindsurfAPI more popular?
fastapi has 104,566 GitHub stars and WindsurfAPI has 3,121. fastapi has the larger community by that measure.
Are fastapi and WindsurfAPI free?
Both are open source. fastapi is licensed under MIT and WindsurfAPI under MIT. Neither carries a licence fee.
What is the difference between fastapi and WindsurfAPI?
fastapi is written in Python and WindsurfAPI in JavaScript. 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 WindsurfAPI?
Choose fastapi if you want the larger community (104,566 stars) or its MIT licence terms. Choose WindsurfAPI if its feature set, stack or MIT licence fits better. Both are self-hostable.