Microsoft unveils its lightweight language model named "Mu," designed to power on-device AI agents in Copilot+ PCs. This model operates on a Neural Processing Unit (NPU), achieving response speeds exceeding 100 tokens per second. Users can issue commands such as “make my mouse pointer bigger,” prompting the AI to assist directly or provide guidance. Currently available to Windows Insiders, Mu enhances privacy and efficiency by reducing dependency on cloud resources.