Meta’s Muse AI Agent Hits 5 Million Downloads

Meta’s Muse AI assistant has surpassed 5 million downloads just weeks after its launch, according to estimates from market intelligence firm Sensor Tower. Muse was launched on September 8, 2026, and crossed the 5 million-download mark around 22 days later. The rapid adoption has placed the app among a small group of non-gaming applications to reach that level of downloads within such a short period.

Sensor Tower’s figures indicate that Muse reached the milestone faster than several established AI applications. The company estimates that ChatGPT took 56 days to reach 5 million downloads, while Grok took 103 days and Claude took 492 days. However, the comparisons have important differences because Muse was available on both iOS and Android from launch, while some competing AI applications initially had more limited platform availability.

Muse is designed as an AI agent rather than simply a chatbot. Meta says the assistant can perform tasks on behalf of users, including sending emails, browsing websites, filling out forms, booking travel and making purchases. The service is available through dedicated iOS and Android applications as well as the web and WhatsApp, although its initial availability has been limited to the United States and Canada.

Meta’s own marketing campaign has also played a role in Muse’s rapid growth. Sensor Tower reported that Meta significantly increased advertising for the app from September 16, after which downloads rose sharply. Muse also received a large share of Meta’s internal advertising placements across its platforms, while the application maintained top positions on the US App Store and Google Play.

The rapid growth comes as competition around autonomous AI agents intensifies. OpenAI recently introduced Dots, while Meta continues developing Muse as a consumer-focused agent capable of carrying out tasks with limited supervision. At the same time, Muse has faced scrutiny over security, including reports of vulnerabilities involving its virtual-machine environment and concerns about how an autonomous agent handles user information. Meta has continued making security updates as the product develops.