Download Russet

Russet is a private and lightweight artificial intelligence application for Mac OS, iPhone and iPad, powered by Apple Intelligence. All conversations run entirely on the device by default, with no accounts, no ads, and no tracking. It includes local AI models with advanced reasoning capabilities, optimized to operate offline. Optionally, the user can provide their own OpenAI API key to access cloud models like GPT-5.1 and GPT-5 mini.