head to head · open source
one-api vs openapi-python-client
one-api has 36,940 GitHub stars, 6,867 forks, 1,036 open issues and last shipped 8 months ago. openapi-python-client has 1,993 stars, 293 forks, 120 open issues and last shipped 4 days ago. one-api leads on adoption by 1,753% (36,940 vs 1,993 stars). one-api is written in JavaScript under MIT; openapi-python-client is written in Python under MIT. one-api has attracted 19% as many forks as stars, openapi-python-client 15%. openapi-python-client 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 | openapi-python-client | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 2.0K |
| License | MIT | MIT |
| Written in | JavaScript | Python |
| Last push | 2026-01-09 | 2026-09-15 |
| Forks | ⑂ 6.9K | ⑂ 293 |
| 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 openapi-python-client if
- You want the openapi-python-client feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and openapi-python-client 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 openapi-python-client
openapi python client is a command line generator that turns OpenAPI 3.0 and 3.1 documents into modern, type annotated Python client libraries, built for Python developers who consume REST APIs and would rather generate a client from a spec than maintain one by hand.
read the full openapi-python-client overview →
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Frequently asked questions
Is one-api or openapi-python-client more popular?
one-api has 36,940 GitHub stars and openapi-python-client has 1,993. one-api has the larger community by that measure.
Are one-api and openapi-python-client free?
Both are open source. one-api is licensed under MIT and openapi-python-client under MIT. Neither carries a licence fee.
What is the difference between one-api and openapi-python-client?
one-api is written in JavaScript and openapi-python-client in Python. 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 openapi-python-client?
Choose one-api if you want the larger community (36,940 stars) or its MIT licence terms. Choose openapi-python-client if its feature set, stack or MIT licence fits better. Both are self-hostable.