Jan

Fully offline

Privacy-first desktop chat with a curated model catalog. Llama / Mistral / Qwen one click from the app.

Editorial verdict: “Best one-binary desktop chat. Curated catalog removes 'which model?' decision paralysis.”

Chat UI
Free
AGPL-3.0
★ 4.5 / 5
GitHub ★ 28,000

Compatibility at a glance

Which runtime + OS combos this app works against. Source of truth for "will it run on my setup?"

§ Runtimes supported
llama-cppollamaopenai-compat
§ OS / platform
macoslinuxwindows
§ Hardware + model hint
Minimum VRAM
4 GB
Recommended starter model
Llama 3.1 8B Q4_K_M

What it is

Jan ships as a desktop binary (no Docker, no terminal). The first-run experience picks a model from its curated catalog, downloads, and you're chatting in under three minutes. Talks to its own embedded llama.cpp runtime or to external Ollama / OpenAI-compatible endpoints. Strong choice for non-technical users who want a 'just works' local chat app.

✓ Strengths

  • +Single-binary install — no terminal required
  • +Curated model catalog with one-click download
  • +Built-in OpenAI-compatible API server

△ Caveats

  • −Smaller ecosystem than Open WebUI
  • −RAG / file-upload features are less mature