head to head · open source
one-api vs openapi-typescript
one-api has 36,932 GitHub stars, 6,867 forks, 1,036 open issues and last shipped 8 months ago. openapi-typescript has 8,369 stars, 665 forks, 300 open issues and last shipped 2 days ago. one-api leads on adoption by 341% (36,932 vs 8,369 stars). one-api is written in JavaScript under MIT; openapi-typescript is written in TypeScript under MIT. one-api has attracted 19% as many forks as stars, openapi-typescript 8%. openapi-typescript 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 | openapi-typescript | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 8.4K |
| License | MIT | MIT |
| Written in | JavaScript | TypeScript |
| Last push | 2026-01-09 | 2026-09-16 |
| Forks | ⑂ 6.9K | ⑂ 665 |
| 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 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 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 openapi-typescript
openapi typescript is a monorepo of tools for consuming OpenAPI schemas in TypeScript. It lives in the TypeScript developer tools ecosystem, sits under the Developer Tools / API Development & Testing category, ships under MIT license, and is eight years old. Repo holds 8,366 stars, 665 forks, and 300 open issues, with last push 2026 09 11T00:36:06Z. Topics tagged: openapi, openapi3, openapi3 1, swagger, typescript. Homepage at https://openapi ts.dev.
read the full openapi-typescript overview →
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Frequently asked questions
Is one-api or openapi-typescript more popular?
one-api has 36,932 GitHub stars and openapi-typescript has 8,369. one-api has the larger community by that measure.
Are one-api and openapi-typescript free?
Both are open source. one-api is licensed under MIT and openapi-typescript under MIT. Neither carries a licence fee.
What is the difference between one-api and openapi-typescript?
one-api is written in JavaScript 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, one-api or openapi-typescript?
Choose one-api if you want the larger community (36,932 stars) or its MIT licence terms. Choose openapi-typescript if its feature set, stack or MIT licence fits better. Both are self-hostable.