head to head · open source
one-api vs serenity-js
one-api has 36,932 GitHub stars, 6,867 forks, 1,036 open issues and last shipped 8 months ago. serenity-js has 616 stars, 152 forks, 88 open issues and last shipped yesterday. one-api leads on adoption by 5,895% (36,932 vs 616 stars). one-api is written in JavaScript under MIT; serenity-js is written in TypeScript under Apache-2.0. one-api has attracted 19% as many forks as stars, serenity-js 25%. serenity-js 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 | serenity-js | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 616 |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | TypeScript |
| Last push | 2026-01-09 | 2026-09-17 |
| Forks | ⑂ 6.9K | ⑂ 152 |
| 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 serenity-js if
- You want the serenity-js feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and serenity-js 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 serenity-js
Serenity/JS is a TypeScript native acceptance testing framework that gives an existing Playwright Test, WebdriverIO, or Cucumber suite the Screenplay Pattern's architecture, and it is built for test automation teams whose end to end and API suites have outgrown duplicated selectors, unreadable reports, and tool lock in.
read the full serenity-js overview →
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Frequently asked questions
Is one-api or serenity-js more popular?
one-api has 36,932 GitHub stars and serenity-js has 616. one-api has the larger community by that measure.
Are one-api and serenity-js free?
Both are open source. one-api is licensed under MIT and serenity-js under Apache-2.0. Neither carries a licence fee.
What is the difference between one-api and serenity-js?
one-api is written in JavaScript and serenity-js 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 serenity-js?
Choose one-api if you want the larger community (36,932 stars) or its MIT licence terms. Choose serenity-js if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.