ChatGPT lost 22 points of web share in a year

ChatGPT's worldwide web-visit share fell from 76% to 54% in the year ending May 2026, while Gemini rose from 6% to 28% and Claude from 1% to 9%, according to Similarweb data compiled by Momentic. The figures, based on desktop and mobile web visits, exclude in-app usage, which accounts for Gemini's 1 billion monthly active users despite its lower web share.

Users · 12 Aug 2026 · High confidence ChatGPT lost 22 points of web share in a year Worldwide AI-chatbot web visits: ChatGPT 76% → 54%. Gemini 6% → 28%. Claude 1% → 9%. This is not monthly users and not revenue. Download PNG /charts/market-share.png /c/market-share How to read this Similarweb worldwide web-visit share desktop + mobile web . May 2026 is still the latest comparable stacked print as of 12 Aug Momentic / Similarweb . Gemini’s 1B app MAU can coexist with ~28% web share because so much Gemini use is in-app / Android. Sources Similarweb · Momentic Similarweb-based Jul 2026