Jan

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GitHub TypeScript NOASSERTION

Description

Jan is an open source alternative to ChatGPT that runs 100% offline on your computer, supporting multiple local LLMs with a full desktop chat UI and API server.

Key Features

  • Local LLM Execution — Download and run Llama, Gemma, Qwen from HuggingFace locally
  • Cloud Model Integration — OpenAI GPT, Anthropic Claude, Mistral, Groq and more cloud APIs
  • Local OpenAI-compatible API — Local API server at localhost:1337 for other applications
  • MCP Protocol Support — Model Context Protocol integration for agent capabilities
  • Custom Assistants — Create specialized AI assistants for specific tasks
  • Privacy First — Everything runs locally with no external server dependency

Use Cases

💡 Use as a privacy-first ChatGPT alternative running locally
💡 Run local LLMs for conversations and tasks in offline environments
💡 Provide local OpenAI-compatible API services for other applications
💡 Integrate local models with external tools via MCP protocol
💡 Deploy localized AI assistants in enterprise environments for data security

Tags

chat-ui desktop-app offline-ai local-llm llamacpp tauri

Categories

💬 Chat UI

Quick Start

# Download installers from GitHub Releases
# macOS: jan.dmg
# Windows: jan.exe
# Linux: jan.deb

# Or build from source
git clone https://github.com/janhq/jan
cd jan
make dev

# Local API available at
# curl http://localhost:1337/v1/chat/completions
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