Meta Muse Agent Tops 5 Million Downloads as Privacy Safeguards Face Real-World Tests

Meta's AI agent Muse has reached 5 million downloads in just 22 days—outpacing ChatGPT, which took 56 days to hit the same milestone—but the rapid adoption masks significant unresolved tensions between the application's ambitious capabilities and mounting privacy concerns. Launched on September 8, 2026, Muse represents Meta's entry into the personal AI agent race: an autonomous assistant that can send emails, book travel, complete purchases, and handle multi-step tasks across a user's digital life. The agent operates within a dedicated cloud environment called Muse Secure VM and uses Muse Spark 1.3, Meta's frontier model for agentic work. It already has 3 million weekly active users and is available on web, desktop (Mac), and mobile across the US and Canada.