head to head · open source
effect vs GoModel
effect has 17,476 GitHub stars, 895 forks, 253 open issues and last shipped yesterday. GoModel has 1,300 stars, 126 forks, 80 open issues and last shipped 2 days ago. effect leads on adoption by 1,244% (17,476 vs 1,300 stars). effect is written in TypeScript under MIT; GoModel is written in Go under MIT. effect has attracted 5% as many forks as stars, GoModel 10%. effect was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (observability), 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
| effect | GoModel | |
|---|---|---|
| GitHub stars | ★ 17K | ★ 1.3K |
| License | MIT | MIT |
| Written in | TypeScript | Go |
| Last push | 2026-11-04 | 2026-11-03 |
| Forks | ⑂ 895 | ⑂ 126 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick effect if
- You weight community size — 17K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick GoModel if
- You want the GoModel feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and GoModel fits your workflow better
About effect
Effect Effect is a library for building robust, maintainable, type safe, and production grade applications in TypeScript. It helps you handle the hard problems at scale: typed errors, dependency injection, structured concurrency, scheduling, tracing, and unified schema validation. Effect V4 is currently a release candidate. The main branch contains v4 development. Install V4 RC Requirements TypeScript 5.9 or newer. TypeScript 7 is recommended for the best performance and compatibility with Effect's TypeScript tooling. Node.js 18 or newer is the general minimum for running Effect on Node.js. Some integration…
read the full effect overview →
About GoModel
GoModel The last AI gateway you will ever need GoModel is the fastest and the most resource efficient AI Gateway ( the self reproducible benchmarks ). It's an alternative to LiteLLM (which was hacked recently) and Portkey (which is no longer maintained on GitHub). (click on the animation ↑ to see the live demo) GoModel saves you money and nerves. Money because you can remember the responses on this layer (caching), track your spending and do tricks like prompt compression and intelligent routing. Nerves because we strive to achieve good quality and reliability. Our ambition is to be the last AI gateway you will…
read the full GoModel overview →
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Frequently asked questions
Is effect or GoModel more popular?
effect has 17,476 GitHub stars and GoModel has 1,300. effect has the larger community by that measure.
Are effect and GoModel free?
Both are open source. effect is licensed under MIT and GoModel under MIT. Neither carries a licence fee.
What is the difference between effect and GoModel?
effect is written in TypeScript and GoModel in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, effect or GoModel?
Choose effect if you want the larger community (17,476 stars) or its MIT licence terms. Choose GoModel if its feature set, stack or MIT licence fits better. Both are self-hostable.