Anthropic's artificial intelligence app Claude has surpassed $1 million in mobile revenue in just 16 weeks, with U.S. users contributing nearly half of the revenue. Despite lagging behind ChatGPT in download numbers, Claude reached the million-dollar revenue milestone at a rapid pace. Market distribution shows that U.S. users contribute the most, facing competition from the upcoming Apple Intelligence and Siri users who will have direct access to ChatGPT.