Jan vs Ollama
A side-by-side comparison of two self-hosted local llm runners options — licensing, setup difficulty, resource needs, and what each one replaces.
Ollama
Run large language models locally with a simple CLI and API
| Feature | Jan | Ollama |
|---|---|---|
| Deploy effort | Read-the-docs project | ≈5-minute setup |
| Health score | 99 · Excellent | 100 · Excellent |
| Category | Local LLM Runners | Local LLM Runners |
| License | AGPL-3.0 | MIT |
| Language | Rust | Go |
| Setup difficulty | Easy | Easy |
| Min. RAM | 8,192 MB | 8,192 MB |
| Deployment | binary, bare-metal | docker, binary, bare-metal |
| GitHub stars | ★ 44,630 | ★ 181,557 |
| First released | 2023 | 2023 |
| Replaces | ChatGPT | ChatGPT, OpenAI API |
What are Jan and Ollama?
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
Ollama
Ollama lets you download, run, and manage open large language models such as Llama, Mistral, Gemma, and Qwen on your own machine. It provides a simple command line interface and a built-in REST API so other tools can use local models.
- One-command model downloads
- OpenAI-compatible API
- GPU and CPU support
- Modelfile customization
Jan vs Ollama: key differences
Jan is written in Rust, while Ollama is built with Go. Licensing differs — AGPL-3.0 for Jan versus MIT for Ollama. Ollama has the considerably larger community, at 181,557 GitHub stars versus 44,630. Ollama lists first-class Docker deployment; Jan does not.
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 Ollama if…
- Extremely easy to set up
- Large model library
Watch out for
- Limited fine-grained inference tuning
Frequently asked questions
Is Jan or Ollama better?
Neither is universally better. Ollama has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are Jan and Ollama free and open-source?
Yes. Jan is licensed under AGPL-3.0 and Ollama under MIT. Both can be self-hosted at no software cost.
Can I run Jan and Ollama with Docker?
Jan: check the project docs for container support. Ollama: yes.