Guidance vs One API
A side-by-side comparison of two self-hosted apps from related categories — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Guidance
Constrained generation language for controlling LLMs
VS
One API
Unified OpenAI-compatible gateway for many LLM providers
| Feature | Guidance | One API |
|---|---|---|
| Category | Self-Hosted AI | Local LLM Runners |
| License | MIT | MIT |
| Language | Jupyter Notebook | JavaScript |
| Setup difficulty | Medium | Medium |
| Min. RAM | 8,192 MB | 256 MB |
| Deployment | source | docker, binary |
| GitHub stars | ★ 21,706 | ★ 36,253 |
| First released | 2023 | 2023 |
| Replaces | OpenAI API | OpenAI API, OpenRouter |
Why pick each one
Choose Guidance if…
- Released under the MIT license
- Mature project with 21.7k GitHub stars
- Written in Jupyter Notebook
Choose One API if…
- Released under the MIT license
- First-class Docker support for quick deployment
- Mature project with 36.3k GitHub stars
- Written in JavaScript
Frequently asked questions
Is Guidance or One API better?
Neither is universally better. One API has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Guidance and One API free and open-source?
Yes. Guidance is licensed under MIT and One API under MIT. Both can be self-hosted at no software cost.
Can I run Guidance and One API with Docker?
Guidance: check the project docs for container support. One API: yes.