OpenAI maintains a commanding lead with three times as many paid U.S. subscribers as Anthropic or Google. While ChatGPT's scale is dominant, including 1B+ monthly actives on mobile, Anthropic has gained traction by passing Gemini in U.S. paid subscriptions and leads in spending in Montana, California, and Massachusetts. The report also highlights a disconnect between usage and monetization, noting that 29 of the top 50 revenue-generating AI firms do not even appear on a16z's traffic lists for web or mobile visits.
