Jan

Jan is an open source desktop application that serves as a ChatGPT replacement. It runs open models locally on the user's own computer and can also connect to cloud models, so a single interface covers both private, on device inference and hosted services. The model list on the vendor's site includes OpenAI, Anthropic Claude, Google Gemini and Gemma, Meta Llama, Mistral, Qwen, DeepSeek and Kimi. Users can choose open models or plug in their own accounts with online providers. A memory feature, which carries context and preferences across conversations, is listed as coming soon. The project is developed in public on GitHub, with releases published there, and the company also hosts models on Hugging Face. Jan is aimed at individuals and developers who want control over where their prompts and data go, who prefer to work offline with local models, or who want one client for several providers instead of juggling separate apps. The download button on the home page targets Mac, and the vendor describes the software as free and open source. The vendor does not publish a pricing page, and the application itself is described as free. Any charges would come from the third party providers whose API keys a user chooses to connect, which are billed by those providers directly.