LOC-03Open source
Jan
Open-source ChatGPT-style app that runs fully offline on your computer.
Open Jan Opens the official site in a new tab. This page stays open so you can come back.
What is Jan?
Jan is an open-source alternative to ChatGPT that runs fully on your computer. It can also connect to online models if you add your own keys.
Used for
Open-source ChatGPT-style app that runs fully offline on your computer.
Best for
Offline assistant
Price
Jan is open source and free to download and run on your own computer.
How to start for free
- Download Jan from jan.ai.
- Install a model from the hub.
- Start a new chat.
Strengths
- Open source and private
- Clean interface
Limits to know
- Needs good hardware
- Fewer features than online assistants
Learn more
Free plans and limits change often. Check the current details on the official Jan website before relying on it for important work. Last reviewed October 2026.