Jan
Open SourceSelf-hostableAn offline AI assistant that runs on your device.
4.630K starsAlternative to ChatGPT, GitHub Copilot
Overview
Jan is a free, open-source tool and a self-hostable alternative to ChatGPT, GitHub Copilot. It's licensed under AGPL 3.0 and written in TypeScript.
Jan is a desktop app that runs large language models fully offline, with a clean assistant interface. It can also connect to remote APIs when you want, but its core promise is private, local AI that never phones home.
Why pick Jan over ChatGPT
- Own your data instead of trusting ChatGPT's servers
- No per-seat pricing — grow without ballooning costs
- Jan is open source: audit it, fork it, extend it
- Self-host for full privacy and compliance control
Key features
- Runs open models entirely offline on CPU or GPU
- Cross-platform desktop app (macOS, Windows, Linux)
- Optional connection to remote model APIs
- Local API server compatible with OpenAI clients
- No telemetry by default
Pros & cons
Screenshots
Installation
Download the desktop app
- Visit jan.ai and download for your OS
- Install and launch Jan
- Download a model from the hub and start chatting
Frequently asked questions
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