head to head · open source
one-api vs pactum
one-api has 36,932 GitHub stars, 6,867 forks, 1,036 open issues and last shipped 8 months ago. pactum has 620 stars, 62 forks, 18 open issues and last shipped 1 months ago. one-api leads on adoption by 5,857% (36,932 vs 620 stars). one-api is written in JavaScript under MIT; pactum is written in JavaScript under MIT. one-api has attracted 19% as many forks as stars, pactum 10%. pactum 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.
← all 8884 open source comparisons
Side by side
| one-api | pactum | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 620 |
| License | MIT | MIT |
| Written in | JavaScript | JavaScript |
| Last push | 2026-01-09 | 2026-08-11 |
| Forks | ⑂ 6.9K | ⑂ 62 |
| 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 pactum if
- You want the pactum feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and pactum 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 pactum
PactumJS is an MIT licensed JavaScript library for REST API testing that automates end to end, integration, contract, and component (service level) tests across every level of the test pyramid, aimed at Node.js developers and QA engineers who want one tool for API verification and API mocking.
read the full pactum overview →
More in Developer Tools
Related comparisons
More API Development & Testing projects
Compare either of these against the rest of the API Development & Testing field.
Frequently asked questions
Is one-api or pactum more popular?
one-api has 36,932 GitHub stars and pactum has 620. one-api has the larger community by that measure.
Are one-api and pactum free?
Both are open source. one-api is licensed under MIT and pactum under MIT. Neither carries a licence fee.
What is the difference between one-api and pactum?
one-api is written in JavaScript and pactum in JavaScript. 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 pactum?
Choose one-api if you want the larger community (36,932 stars) or its MIT licence terms. Choose pactum if its feature set, stack or MIT licence fits better. Both are self-hostable.