Meta launched its Muse personal AI agent on Sept. 8, 2026, positioning privacy protections as a central feature while offering software that can act across connected applications and a built-in browser. The company said Muse reached roughly 2.8 million installs in its first 12 days, while Meta shares rose more than 20% after the announcement. Earlier reports said Muse was released on Aug. 8 and reached 3 million downloads within two weeks; the figures are broadly consistent on adoption but differ on the launch date. Muse is available to U.S. users aged 18 and older through iOS, Android, web interfaces and WhatsApp, with free, $20-a-month and $100-a-month tiers. Each user receives an isolated cloud virtual machine monitored by Meta’s Sentinel security agent, while model-training opt-out is enabled by default and Muse data is not intended for Meta advertising systems. Partnerships with Walmart and PayPal, announced at Meta Connect on Sept. 23-24, broaden the agent’s potential transaction capabilities. The product also remains relevant to investors tracking agent AI’s potential demand for CPUs, memory, storage, networking equipment and semiconductor substrates.