head to head · open source
one-api vs mangum
one-api has 36,940 GitHub stars, 6,867 forks, 1,036 open issues and last shipped 8 months ago. mangum has 2,137 stars, 135 forks, 38 open issues and last shipped 14 days ago. one-api leads on adoption by 1,629% (36,940 vs 2,137 stars). one-api is written in JavaScript under MIT; mangum is written in Python under MIT. one-api has attracted 19% as many forks as stars, mangum 6%. mangum was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (api-gateway), 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
| one-api | mangum | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 2.1K |
| License | MIT | MIT |
| Written in | JavaScript | Python |
| Last push | 2026-01-09 | 2026-09-04 |
| Forks | ⑂ 6.9K | ⑂ 135 |
| 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 mangum if
- You want the mangum feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and mangum fits your workflow better
About one-api
One API is a self hosted LLM API management and key redistribution system that exposes many model providers through the standard OpenAI API format, aimed at developers, teams and operators who want a single endpoint, a single key model and a single quota surface across providers.
read the full one-api overview →
About mangum
Mangum Mangum is an adapter for running ASGI applications in AWS Lambda to handle Function URL, API Gateway, ALB, and Lambda@Edge events. Documentation : Features Event handlers for API Gateway HTTP and REST APIs, Application Load Balancer, Function URLs, and CloudFront Lambda@Edge. Compatibility with ASGI application frameworks, such as Starlette, FastAPI, Quart and Django. Support for binary media types and payload compression in API Gateway using GZip or Brotli. Works with existing deployment and configuration tools, including Serverless Framework and AWS SAM. Startup and shutdown lifespan events. Installation…
read the full mangum overview →
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Frequently asked questions
Is one-api or mangum more popular?
one-api has 36,940 GitHub stars and mangum has 2,137. one-api has the larger community by that measure.
Are one-api and mangum free?
Both are open source. one-api is licensed under MIT and mangum under MIT. Neither carries a licence fee.
What is the difference between one-api and mangum?
one-api is written in JavaScript and mangum in Python. 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 mangum?
Choose one-api if you want the larger community (36,940 stars) or its MIT licence terms. Choose mangum if its feature set, stack or MIT licence fits better. Both are self-hostable.