head to head · open source
one-api vs aws-lambda-fastify
one-api has 36,940 GitHub stars, 6,867 forks, 1,036 open issues and last shipped 8 months ago. aws-lambda-fastify has 560 stars, 37 forks, 5 open issues and last shipped 2 months ago. one-api leads on adoption by 6,496% (36,940 vs 560 stars). one-api is written in JavaScript under MIT; aws-lambda-fastify is written in JavaScript under MIT. one-api has attracted 19% as many forks as stars, aws-lambda-fastify 7%. aws-lambda-fastify was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (api, api-gateway, proxy), 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 | aws-lambda-fastify | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 560 |
| License | MIT | MIT |
| Written in | JavaScript | JavaScript |
| Last push | 2026-01-09 | 2026-08-04 |
| Forks | ⑂ 6.9K | ⑂ 37 |
| 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 aws-lambda-fastify if
- You want the aws-lambda-fastify feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and aws-lambda-fastify 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 aws-lambda-fastify
aws lambda fastify is an MIT licensed JavaScript library that runs a Fastify application as an AWS Lambda handler behind API Gateway or an Application Load Balancer, built for Node.js teams that already write HTTP APIs with Fastify and want to deploy them serverless without rewriting their routes.
read the full aws-lambda-fastify overview →
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Frequently asked questions
Is one-api or aws-lambda-fastify more popular?
one-api has 36,940 GitHub stars and aws-lambda-fastify has 560. one-api has the larger community by that measure.
Are one-api and aws-lambda-fastify free?
Both are open source. one-api is licensed under MIT and aws-lambda-fastify under MIT. Neither carries a licence fee.
What is the difference between one-api and aws-lambda-fastify?
one-api is written in JavaScript and aws-lambda-fastify 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 aws-lambda-fastify?
Choose one-api if you want the larger community (36,940 stars) or its MIT licence terms. Choose aws-lambda-fastify if its feature set, stack or MIT licence fits better. Both are self-hostable.