head to head · open source
one-api vs azure-rest-api-specs
one-api has 37,316 GitHub stars, 6,887 forks, 1,036 open issues and last shipped 10 months ago. azure-rest-api-specs has 3,112 stars, 6,029 forks, 3,379 open issues and last shipped yesterday. one-api leads on adoption by 1,099% (37,316 vs 3,112 stars). one-api is written in JavaScript under MIT; azure-rest-api-specs is written in TypeSpec under MIT. one-api has attracted 18% as many forks as stars, azure-rest-api-specs 194%. azure-rest-api-specs 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
| one-api | azure-rest-api-specs | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 3.1K |
| License | MIT | MIT |
| Written in | JavaScript | TypeSpec |
| Last push | 2026-01-09 | 2026-11-02 |
| Forks | ⑂ 6.9K | ⑂ 6.0K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick one-api if
- You weight community size — 37K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick azure-rest-api-specs if
- You want the azure-rest-api-specs feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeSpec
- You evaluated both and azure-rest-api-specs fits your workflow better
About one-api
中文 English 日本語 One API ✨ 通过标准的 OpenAI API 格式访问所有的大模型，开箱即用 ✨ 部署教程 · 使用方法 · 意见反馈 · 截图展示 · 在线演示 · 常见问题 · 相关项目 · 赞赏支持 [!NOTE] 本项目为开源项目，使用者必须在遵循 OpenAI 的使用条款以及 法律法规 的情况下使用，不得用于非法用途。 根据《生成式人工智能服务管理暂行办法》的要求，请勿对中国地区公众提供一切未经备案的生成式人工智能服务。 [!NOTE] 稳定版 / 预览版镜像地址：justsong/one api 或者 ghcr.io/songquanpeng/one api alpha 版镜像地址：justsong/one api alpha 或者 ghcr.io/songquanpeng/one api alpha [!WARNING] 使用 root 用户初次登录系统后，务必修改默认密码 123456 ！ 功能 1. 支持多种大模型： + [x] OpenAI ChatGPT 系列模型（支持 Azure OpenAI API） + [x] Anthropic Claude 系列模型 (支持 AWS Claude) + [x] Google PaLM2/Gemini 系列模型 + [x] Mistral 系列模型 + [x] 字节跳动豆包大模型（火山引擎） + [x] 百度文心一言系列模型 +…
read the full one-api overview →
About azure-rest-api-specs
Azure REST API Specifications Description This repository is the canonical source for REST API specifications for Microsoft Azure. You can learn more about it here. Getting started If you're a Microsoft employee looking for information about all of the repositories and steps for Azure SDK Libraries Releases, go to the aka.ms/azsdk/join. External Contributors can read Getting Started with OpenAPI Specifications and Getting Started with TypeSpec Specifications. Directory Structure See aka.ms/azsdk/spec dirs. Examples These examples provide a starting point for how a library should be structured, as well as the…
read the full azure-rest-api-specs overview →
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Frequently asked questions
Is one-api or azure-rest-api-specs more popular?
one-api has 37,316 GitHub stars and azure-rest-api-specs has 3,112. one-api has the larger community by that measure.
Are one-api and azure-rest-api-specs free?
Both are open source. one-api is licensed under MIT and azure-rest-api-specs under MIT. Neither carries a licence fee.
What is the difference between one-api and azure-rest-api-specs?
one-api is written in JavaScript and azure-rest-api-specs 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, one-api or azure-rest-api-specs?
Choose one-api if you want the larger community (37,316 stars) or its MIT licence terms. Choose azure-rest-api-specs if its feature set, stack or MIT licence fits better. Both are self-hostable.