Meta's September 2026 launch of Muse—a dedicated per-user cloud VM with persistent state, browser control, and autonomous multi-step task execution across apps—has defined the benchmark and accelerated competitive timelines. Rivals including Microsoft, Anthropic, Amazon, and Perplexity face pressure to match these agentic capabilities before year-end, with trader sentiment reflecting uncertainty around engineering readiness, safety reviews, and integration with existing platforms like Copilot or Claude. Recent model updates from Meta, including Muse Wonder in mid-October, underscore rapid iteration in agent training, while historical patterns show consumer agent features often slip due to reliability and regulatory hurdles. Key near-term catalysts include developer conferences, earnings calls, and any public betas that could shift implied probabilities.