Meta Expands Muse AI Agent to Mac, Enabling On-Device Task Automation

Meta has launched Muse for macOS, extending its personal AI agent to handle tasks directly on users' computers with explicit permission. The Mac app, announced on September 17, 2026, allows Muse to access and act on files, apps, and data—including Mail, Messages, Calendar, and Notes—to complete workflows such as organizing downloads, locating documents, summarizing communications, and filling forms. The move positions Meta among competitors including OpenAI and Anthropic in the burgeoning AI agent market, though differentiated by what reviewers describe as uncommonly thoughtful consumer design.