Plain-AyI
← All projects
Run AI on your computer

Jan

A desktop app for chatting with AI models that run privately on your own computer.

What it does

Jan is a desktop app that works like ChatGPT, but can run AI models directly on your own computer. You download a model from inside the app and start chatting, and your conversations can stay on your machine.

If you prefer, it can also connect to online models from OpenAI, Anthropic, Mistral and others. You can create custom assistants for particular tasks.

It also runs a local server that other apps can use, and supports MCP, a standard way to plug tools into AI apps.

Who it's for

Anyone who wants a private, offline-capable AI chat app without technical setup.

Can I use it without coding?

Yes. Download the installer for Windows, Mac or Linux. Bigger models need a more powerful computer. New to this? Start here.

Can I run it?

Cost
FreeNothing to pay or sign up for.
Runs on
Mac, Windows, Linux
Computer
Works best on a powerful computer or one with a graphics card (GPU)
Privacy
Your choice: run it on your device or use an online service
API key
Not needed

Try it

  1. Download Jan for Windows, Mac or Linux from its website.
  2. Download an AI model inside the app, or connect an online provider.
Official download page

Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?

Before you install

  • Only download from the official GitHub page or the official download page above. Copies with similar names exist for many popular projects.
  • No standard license listed. Check the GitHub page before using it for business.
  • More on staying safe

Where people are talking about it