Jan vs llamafile
A side-by-side comparison of two self-hosted local llm runners options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Jan | llamafile |
|---|---|---|
| Deploy effort | Read-the-docs project | Read-the-docs project |
| Health score | 99 · Excellent | 97 · Excellent |
| Category | Local LLM Runners | Local LLM Runners |
| License | AGPL-3.0 | Apache-2.0 |
| Language | Rust | C++ |
| Setup difficulty | Easy | Easy |
| Min. RAM | 8,192 MB | 8,192 MB |
| Deployment | binary, bare-metal | binary |
| GitHub stars | ★ 44,630 | ★ 26,042 |
| First released | 2023 | 2023 |
| Replaces | ChatGPT | OpenAI API, ChatGPT |
What are Jan and llamafile?
Jan
Jan is a desktop application that runs large language models fully offline on your computer. It provides a clean chat interface, a local API server, and the ability to connect to remote providers when desired.
- Fully offline by default
- Built-in local API server
- Model hub browser
- Privacy focused
llamafile
llamafile is a Mozilla project that turns large language model weights into a single cross-platform executable. It bundles llama.cpp with a model so an LLM can be run and served locally with no installation step.
- Single-file LLM distribution
- Runs on six operating systems
- OpenAI-compatible API server
- No installation required
Jan vs llamafile: key differences
Jan is written in Rust, while llamafile is built with C++. Licensing differs — AGPL-3.0 for Jan versus Apache-2.0 for llamafile.
Why pick each one
Choose Jan if…
- Polished desktop interface
- Fully offline chat
- Local API server included
Watch out for
- Single-user desktop focus
- Large models need RAM
Choose llamafile if…
- Extremely portable
- Fast startup
Watch out for
- Large file sizes for big models
Frequently asked questions
Is Jan or llamafile better?
Neither is universally better. Jan has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are Jan and llamafile free and open-source?
Yes. Jan is licensed under AGPL-3.0 and llamafile under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Jan and llamafile with Docker?
Jan: check the project docs for container support. llamafile: check the project docs for container support.