head to head · open source
one-api vs ts-rest
one-api has 36,940 GitHub stars, 6,867 forks, 1,036 open issues and last shipped 8 months ago. ts-rest has 3,337 stars, 177 forks, 141 open issues and last shipped 7 months ago. one-api leads on adoption by 1,007% (36,940 vs 3,337 stars). one-api is written in JavaScript under MIT; ts-rest is written in TypeScript under MIT. one-api has attracted 19% as many forks as stars, ts-rest 5%. ts-rest was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (api), 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 | ts-rest | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 3.3K |
| License | MIT | MIT |
| Written in | JavaScript | TypeScript |
| Last push | 2026-01-09 | 2026-02-06 |
| Forks | ⑂ 6.9K | ⑂ 177 |
| 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 ts-rest if
- You want the ts-rest feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and ts-rest 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 ts-rest
ts rest Incrementally adoptable RPC like client and server helpers for a magical end to end typed experience 🪄 Join us on Discord for help, feedback, and discussions! Introduction ts rest offers a simple way to define a contract for your API, which can be both consumed and implemented by your application, giving you end to end type safety without the hassle or code generation. Features End to end type safety 🛟 RPC like client side API ⚡️ Small Bundle Size 📉 No Code Generation 🏃♀️ Zod support for runtime validation 🔒 Full optional OpenAPI integration 📝 👉 Start reading the official Quickstart Guide 👈 Super…
read the full ts-rest overview →
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Frequently asked questions
Is one-api or ts-rest more popular?
one-api has 36,940 GitHub stars and ts-rest has 3,337. one-api has the larger community by that measure.
Are one-api and ts-rest free?
Both are open source. one-api is licensed under MIT and ts-rest under MIT. Neither carries a licence fee.
What is the difference between one-api and ts-rest?
one-api is written in JavaScript and ts-rest in TypeScript. 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 ts-rest?
Choose one-api if you want the larger community (36,940 stars) or its MIT licence terms. Choose ts-rest if its feature set, stack or MIT licence fits better. Both are self-hostable.