Meta's Chief AI Officer, Alexandr Wang, recently published an open letter outlining the core philosophy behind Muse AI Assistant, which he spearheaded to help ordinary people achieve their dreams. Muse has seen rapid growth since its launch. According to Sensor Tower data, the app accumulated 2.8 million downloads in the US and Canadian App Stores within its first 12 days, surpassing ChatGPT's 1.3 million downloads during the same period. On September 19, it set a US record for single-day downloads with 264,000. Boosted by this performance, Meta's market capitalization has increased by approximately $234 billion over the past five trading days.