head to head · open source
one-api vs open-agent-connector
one-api has 37,136 GitHub stars, 6,885 forks, 1,036 open issues and last shipped 9 months ago. open-agent-connector has 838 stars, 321 forks, 0 open issues and last shipped yesterday. one-api leads on adoption by 4,332% (37,136 vs 838 stars). one-api is written in JavaScript under MIT; open-agent-connector is written in Python under Apache-2.0. one-api has attracted 19% as many forks as stars, open-agent-connector 38%. open-agent-connector was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (api-gateway), 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 | open-agent-connector | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 838 |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Python |
| Last push | 2026-01-09 | 2026-10-13 |
| Forks | ⑂ 6.9K | ⑂ 321 |
| 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 open-agent-connector if
- You want the open-agent-connector feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and open-agent-connector 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 open-agent-connector
Open Agent Connector is an open source, self hosted integration gateway that lets AI agents discover and execute actions against app APIs over the Model Context Protocol or a REST API, built for developers who want to inspect, run, and extend their own agent integration layer.
read the full open-agent-connector overview →
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Frequently asked questions
Is one-api or open-agent-connector more popular?
one-api has 37,136 GitHub stars and open-agent-connector has 838. one-api has the larger community by that measure.
Are one-api and open-agent-connector free?
Both are open source. one-api is licensed under MIT and open-agent-connector under Apache-2.0. Neither carries a licence fee.
What is the difference between one-api and open-agent-connector?
one-api is written in JavaScript and open-agent-connector 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 open-agent-connector?
Choose one-api if you want the larger community (37,136 stars) or its MIT licence terms. Choose open-agent-connector if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.