Apple macOS 27 features hidden local AI chatbot

Users running macOS 27 Golden Gate on compatible Macs can access a built-in, local large language model (LLM) via the Terminal app. This feature, known as Apple Foundation Models CLI (or fm), allows for AI interactions without the need for a subscription, separate app downloads, or an active internet connection once the model is ready.

The discovery was highlighted by X user Alex Choi, whose report regarding the hidden tool gained significant attention. Unlike cloud-based services such as ChatGPT, Claude, or Gemini, this integrated tool processes requests directly on the device, ensuring that user inputs are not transmitted to external AI services.