The agenttopped730,000 downloads within five days, which put it ahead of both ChatGPT and Claude. By last Friday, Muse surpassed OpenAI Group PBC’s chatbot as the most popular free app on the App Store. Meta offers the free version of the agent alongside two paid editions that have higher rate limits. The three companies are major providers of central processing units, which AI agents use heavily to run their tools. The stock rally suggests that Wall Street doesn’t expect Amazon’s ban to dent the popularity of Muse.