head to head · open source
one-api vs aimock
one-api has 36,932 GitHub stars, 6,867 forks, 1,036 open issues and last shipped 8 months ago. aimock has 930 stars, 71 forks, 1 open issues and last shipped yesterday. one-api leads on adoption by 3,871% (36,932 vs 930 stars). one-api is written in JavaScript under MIT; aimock is written in TypeScript under MIT. one-api has attracted 19% as many forks as stars, aimock 8%. aimock was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (openai), 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 | aimock | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 930 |
| License | MIT | MIT |
| Written in | JavaScript | TypeScript |
| Last push | 2026-01-09 | 2026-09-17 |
| Forks | ⑂ 6.9K | ⑂ 71 |
| 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 aimock if
- You want the aimock feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and aimock 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 aimock
aimock is a TypeScript mock server that makes every AI provider, protocol, and service an application talks to answer on one local port, built for developers who need deterministic tests of LLM backed software without API keys, network calls, or surprise bills.
read the full aimock overview →
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Frequently asked questions
Is one-api or aimock more popular?
one-api has 36,932 GitHub stars and aimock has 930. one-api has the larger community by that measure.
Are one-api and aimock free?
Both are open source. one-api is licensed under MIT and aimock under MIT. Neither carries a licence fee.
What is the difference between one-api and aimock?
one-api is written in JavaScript and aimock 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 aimock?
Choose one-api if you want the larger community (36,932 stars) or its MIT licence terms. Choose aimock if its feature set, stack or MIT licence fits better. Both are self-hostable.