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Jan AI Review 2026 — 100% Offline Open Source AI Assistant
Jan is a free, open-source desktop AI assistant that runs entirely offline. No cloud, no telemetry, OpenAI-compatible API. Works on Windows, Mac, Linux.
Jan runs AI models on your computer and can connect to online model providers. It includes chat, file handling, web search, agents, MCP connectors, projects, and a local OpenAI-compatible API server.
It is aimed at people who want local AI, privacy, model choice, or developer control. Jan itself is free and does not require an account for local use; online model providers may charge separately. Native mobile apps are not listed as available.
Features
- Run AI models locally on macOS, Windows, and Linux
- Connect models from OpenAI, Anthropic, Google, Mistral, and other providers
- Use built-in web_search and web_fetch tools
- Run autonomous agents that work with files, commands, and web research
- Extend Jan with Model Context Protocol connectors
- Serve local models through an OpenAI-compatible API
- Use Jan CLI to serve models and launch agents from a terminal
- Open-source software licensed under Apache 2.0
Use cases
- Run private AI chats and model inference on your own computer
- Connect local models to files, commands, calendars, or external tools
- Search the web and fetch pages from inside supported model chats
- Build applications against Jan's local OpenAI-compatible API
- Compare open models and connected cloud models in one interface