Meta’s Muse personal AI agent app, launched September 8 as a proactive large language model-powered assistant that executes tasks across connected services via secure cloud VMs, has dominated the US App Store free charts since mid-September and remains the clear leader heading into October 9. Recent momentum stems from Meta Connect announcements expanding integrations, voice modes, Mac support, and glasses compatibility, plus Meta’s vast distribution through WhatsApp and other platforms that accelerated downloads and retention far beyond typical AI app launches. This positions Muse with the highest implied probability, while established competitors like ChatGPT and Google Gemini face headwinds from the new entrant’s novelty and feature velocity; lower-odds options such as Vinted or Threads reflect limited recent catalysts or seasonal factors unlikely to displace the current frontrunner before the snapshot date.