head to head · open source
one-api vs wiremock
one-api has 36,932 GitHub stars, 6,867 forks, 1,036 open issues and last shipped 8 months ago. wiremock has 7,374 stars, 1,518 forks, 503 open issues and last shipped 3 days ago. one-api leads on adoption by 401% (36,932 vs 7,374 stars). one-api is written in JavaScript under MIT; wiremock is written in Java under Apache-2.0. one-api has attracted 19% as many forks as stars, wiremock 21%. wiremock 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 | wiremock | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 7.4K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Java |
| Last push | 2026-01-09 | 2026-09-15 |
| Forks | ⑂ 6.9K | ⑂ 1.5K |
| 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 wiremock if
- You want the wiremock feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and wiremock 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 wiremock
WireMock is an open source tool for mocking HTTP services, started in 2011 as a Java library by Tom Akehurst and now spanning multiple programming languages and technology stacks. It lives in the Java ecosystem, is licensed under Apache 2.0, and is published at wiremock.org. The project can run as a library or client wrapper in many languages, or as a standalone server, and it supports several approaches for creating mock APIs: in code, via its REST API, as JSON files, and by recording HTTP traffic proxied to another destination.
read the full wiremock overview →
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Frequently asked questions
Is one-api or wiremock more popular?
one-api has 36,932 GitHub stars and wiremock has 7,374. one-api has the larger community by that measure.
Are one-api and wiremock free?
Both are open source. one-api is licensed under MIT and wiremock under Apache-2.0. Neither carries a licence fee.
What is the difference between one-api and wiremock?
one-api is written in JavaScript and wiremock in Java. 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 wiremock?
Choose one-api if you want the larger community (36,932 stars) or its MIT licence terms. Choose wiremock if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.