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Jan
by Menlo Research (janhq)
An open-source ChatGPT alternative that runs 100% offline on your computer.
View on GitHub →What it does
- One-click downloads of Hugging Face models
- OpenAI-compatible local server (localhost:1337)
- MCP integration and optional cloud API connections
Install it
Requirements: Windows, macOS or Linux.
Download
https://jan.ai/download
The prompt for your agent
Paste it into your coding agent: it checks the requirements and installs it for you.
Claude CodeCodexCursorGemini CLIopencode
Prompt
Install Jan (https://jan.ai) on my machine.
1. Check the requirements: Windows, macOS or Linux. If anything is missing, tell me before installing anything.
2. Follow the official method:
- see https://jan.ai/download
3. Check that it works, then explain how to launch it and where to start.
Always review what your agent is about to run, especially install commands.