head to head · open source
one-api vs ruby-openai
one-api has 36,932 GitHub stars, 6,867 forks, 1,036 open issues and last shipped 8 months ago. ruby-openai has 3,224 stars, 383 forks, 55 open issues and last shipped 5 months ago. one-api leads on adoption by 1,046% (36,932 vs 3,224 stars). one-api is written in JavaScript under MIT; ruby-openai is written in Ruby under MIT. one-api has attracted 19% as many forks as stars, ruby-openai 12%. ruby-openai was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (chatgpt, 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 | ruby-openai | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 3.2K |
| License | MIT | MIT |
| Written in | JavaScript | Ruby |
| Last push | 2026-01-09 | 2026-05-01 |
| Forks | ⑂ 6.9K | ⑂ 383 |
| 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 ruby-openai if
- You want the ruby-openai feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Ruby
- You evaluated both and ruby-openai 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 ruby-openai
ruby openai is a Ruby client library for the OpenAI API, released under the MIT license, and it is listed in the Developer Tools / API Development & Testing category. The repository has 3,222 stars, 383 forks, and a six year age, with the last push recorded on 2026 05 01T14:37:06Z. It lives in the Ruby and Rails ecosystem, and its topics include ai, api client, chatgpt, dall e, gpt 4, gpt 4o, o1, openai, rails, ruby, and whisper.
read the full ruby-openai overview →
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Frequently asked questions
Is one-api or ruby-openai more popular?
one-api has 36,932 GitHub stars and ruby-openai has 3,224. one-api has the larger community by that measure.
Are one-api and ruby-openai free?
Both are open source. one-api is licensed under MIT and ruby-openai under MIT. Neither carries a licence fee.
What is the difference between one-api and ruby-openai?
one-api is written in JavaScript and ruby-openai in Ruby. 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 ruby-openai?
Choose one-api if you want the larger community (36,932 stars) or its MIT licence terms. Choose ruby-openai if its feature set, stack or MIT licence fits better. Both are self-hostable.