Jan is an open source alternative to ChatGPT that runs 100% offline on your computer.

Features

• Local AI models: Run LLMs such as Llama, Gemma, Qwen and others on your device
• Optional cloud access: Connect to services like OpenAI, Anthropic, Gemini and Groq when internet-based models are required
• Custom assistants: Create tailored assistants for writing, coding, summarizing and more
• OpenAI-compatible API: Includes a local API server at localhost:1337 for tools expecting the OpenAI format
• MCP support: Integrates the Model Context Protocol for enhanced workflows and tooling
• Privacy-aware design: Jan works offline by default. Cloud access is optional and user-controlled

Jan is actively maintained by Menlo Research.
Feedback, bug reports and feature requests are welcomed through GitHub.