Jan - Open-source ChatGPT replacement

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Getting Started - Community - Changelog - Bug reports

Jan is bringing the best of open-source AI in an easy-to-use product. Download and run LLMs with full control and privacy.

Installation

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The easiest way to get started is by downloading one of the following versions for your respective operating system:

Platform	Download
Windows	jan.exe
macOS	jan.dmg
Linux (deb)	jan.deb
Linux (AppImage)	jan.AppImage
Linux (Arm64)	How-to

Download from jan.ai or GitHub Releases.

Features

• Local AI Models: Download and run LLMs (Llama, Gemma, Qwen, GPT-oss etc.) from HuggingFace
• Cloud Integration: Connect to GPT models via OpenAI, Claude models via Anthropic, Mistral, Groq, MiniMax, and others
• Custom Assistants: Create specialized AI assistants for your tasks
• OpenAI-Compatible API: Local server at localhost:1337 for other applications
• Model Context Protocol: MCP integration for agentic capabilities
• Privacy First: Everything runs locally when you want it to

Build from Source

For those who enjoy the scenic route:

Prerequisites

• Node.js ≥ 20.0.0
• Yarn ≥ 4.5.3
• Make ≥ 3.81
• Rust (for Tauri)
• (macOS Apple Silicon only) MetalToolchain xcodebuild -downloadComponent MetalToolchain

Run with Make

git clone https://github.com/janhq/jan
cd jan
make dev

This handles everything: installs dependencies, builds core components, and launches the app.

Available make targets:

• make dev - Full development setup and launch
• make build - Production build
• make test - Ru