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Jan

A free desktop ChatGPT alternative runs local models offline on Windows, macOS and Linux, or connects to cloud models such as GPT and Claude.

Alternative to:

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Jan is a desktop AI chat app for people who want to run models on their own computer while retaining the option to use cloud providers. Local model use works offline; choosing a hosted model sends requests to that provider.

  • Local models: Download and chat with models from Hugging Face, including Llama, Gemma, Qwen and GPT-oss.
  • Cloud connections: Use OpenAI's GPT, Anthropic's Claude, Gemini or Mistral in the same app when you want a hosted model.
  • Custom assistants: Create assistants tailored to particular tasks.
  • Tools and other apps: Connect tools through MCP, or let other applications use Jan's local models through its OpenAI-compatible API.

Jan is free and available for Windows, macOS and Linux. Cloud model connections require internet access. Windows GPU support includes NVIDIA, AMD and Intel Arc, and Linux also supports GPU acceleration. On macOS, the stated memory guidance is 8 GB RAM for 3B models, 16 GB for 7B and 32 GB for 13B, so available memory affects which local models are practical.

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