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Overview

Overview

Jan 0.8.3 is now live! Navigable message version branching, a fully custom Linux titlebar that follows your desktop environment's button layout, a unified reasoning/tool chain-of-thought timeline, interactive HTML and static SVG artifact previews (experimental), video input for local vision models, and a wide batch of streaming-performance, citation, sampler, and error-surfacing fixes. See the full changelog.

Jan is an open-source replacement for Claude and ChatGPT. It comes with built-in foundation models and an application ecosystem that runs entirely on your hardware, keeping your data private and giving you full ownership over your AI.

Get Started

Quickstart

Install Jan on macOS, Windows, or Linux and chat with AI in minutes — no account needed.

Models

Jan ships with foundation models built for reasoning, agents, and deep research — ready to run on your computer.

Agents

Autonomous AI agents that run on your hardware — read files, manage calendars, and take actions via WhatsApp, Discord, or Slack.

Integrations

Connect Jan with Claude Code, OpenClaw, MCP servers, and more.

Ecosystem

Jan Desktop

macOS, Windows, and Linux apps with full offline support.

Jan Web

Jan in the browser — a direct alternative to chatgpt.com.

Jan Server

Run a local OpenAI-compatible API server on your machine.

Jan Models

Optimized for reasoning, agents, and deep research — built to match frontier AI capabilities and small enough to run on your personal computer.

Jan CLI

Serve local models and launch autonomous agents from your terminal using Jan's local AI.

Jan Platform

The infrastructure layer for building AI products on top of Jan. (Coming Soon)

Community

Discord

Join the Jan community — get help, share your setup, and talk local AI.

Reddit

Ask questions, share setups, and discuss local AI on r/askjan.

Principles

Acknowledgements

Jan exists because we've borrowed, learned, and built on the work of others.

Quickstart