Jan AI: Use ChatGPT on Your Computer (No Internet Needed)

:right_arrow: Quick Overview

Get the app ➜ Pick a model ➜ Start chatting ➜ Your data stays on your computer

:brain: What Is Jan?

Jan is an app that lets you chat with AI like ChatGPT, but everything happens offline on your own computer. No one is watching, no internet is needed, and your data stays with you.

  • Free and open-source
  • Works on Windows, Mac, and Linux
  • Uses popular offline AI models like Mistral, LLaMA 3, and Gemma
  • Looks and feels like ChatGPT

:package: Download: https://jan.ai
:open_file_folder: Source Code: GitHub - menloresearch/jan: Jan is an open source alternative to ChatGPT that runs 100% offline on your computer


:white_check_mark: What You Can Do With It

  • Chat with AI like you do with ChatGPT
  • Ask questions or get help with anything
  • Use it without internet
  • Read and talk to your PDF or DOC files (test feature)
  • Connect it with other apps through its local server
  • Add tools and extras using extensions
  • Try upcoming features like smart memory and assistants

:warning: Things to Know

  • Older versions had bugs. Use version v0.6.3 or newer.
  • Even though it runs offline, it still opens a local server on your device. Don’t use it in public/shared systems without safety settings.
  • If you use cloud models (optional), those chats might leave your device.


:laptop: Simple Features Table

Feature What It Means
Chat offline You don’t need internet
File chat (test) Ask questions to your files
API server Use Jan in your own apps
Extensions Add cloud or tools if you want
Private No account, no tracking

:magnifying_glass_tilted_left: Best Models to Use (For 2025)

Model Best For RAM Needed
Mistral 7B Smart answers 8–12 GB
LLaMA 3 8B Deep thinking 12–16 GB
Gemma 2B Fast and light tasks 4–6 GB
DeepSeek Coding + logic 12–16 GB
Mixtral Big answers, needs more RAM 32 GB+

Use models in GGUF format. Jan helps you choose the right one.


:test_tube: Things Still in Progress

  • File chat is still improving
  • Memory and assistants coming soon
  • Code plugins are available but not safe unless you know what you’re doing

:brain: Why People Like It

  • No sign-up or login needed
  • Data stays private
  • Works without internet
  • Looks nice and simple
  • Easy to change and add features

:puzzle_piece: You Can Use Jan For:

  • Studying or writing offline
  • Talking to documents
  • Safe, private AI chats
  • Building your own bots or tools
  • Connecting to apps like VSCode or Notion

:locked_with_key: What’s Private?

  • Jan doesn’t send anything to the cloud
  • No prompt logs
  • No ads, no account, no tracking
  • If you use online models, those may track (but it tells you clearly)

:wrench: Where to Start


:clapper_board: Watch It in Action

  • Bringing AI to Your Desktop (YouTube)

:spiral_notepad: Final Note

Jan doesn’t sell your data. It doesn’t even ask who you are. It’s not perfect, but it’s yours. If you want private, offline AI, it’s one of the best simple tools out there.

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