Meta AI has launched its new large language model, Muse Spark, designed to enhance user interaction with a "people first" approach. The model will roll out to U.S. users and includes Instant and Thinking modes, although users of Instagram, Facebook, Messenger, WhatsApp, and Meta's AI glasses will experience delays in access. Muse Spark focuses on personalization, assisting users with tasks like troubleshooting home appliances and engaging in minigames. Meta collaborated with over 1,000 physicians to improve the AI's health-related capabilities. The model emphasizes user interaction and multi-agent functionality, allowing it to perform complex tasks efficiently. Muse Spark aims to create a more personal and engaging user experience, distinguishing itself from previous AI iterations and positioning itself as a reliable assistant.