Jan is an open-source desktop assistant that runs language models on your computer, offline if you want, with optional connections to hosted models. It is published by Menlo Research under the Apache 2.0 licence.
jan.aiJan
Open-source ChatGPT alternative that can run offline
- Category
- AI
- Pricing
- Open source
- Licence
- Apache 2.0, copyright Menlo Research
- Site
- jan.ai
- Tags
- llm, offline, privacy
What it does
Jan is a desktop chat app that downloads open models and runs them on your computer, offline if you want. It can also connect to hosted models from OpenAI, Anthropic, Mistral, Groq and others.
Who it suits
People who want a ChatGPT-style window over local models, with an open-source codebase they can read. Builds exist for Windows, macOS and Linux.
Price
Free. The site lists no paid plan.
Read on jan.ai on 27 October 2026. Prices change: the official page is the reference.
Other sources
Appears in
Tools to run local LLMs, with Ollama, LM Studio and Aider
Jan alternatives, 2 tools that do the same job
Jan vs Ollama, side by side
Jan vs LM Studio, side by side
AI, 12 tools