ChatGPT’s share of worldwide AI‑chatbot web visits fell from 76% in 2025 to 54% by May 2026, according to Similarweb and Momentic data. Gemini dropped from 6% to 28%, while Claude rose from 1% to 9%. The figures reflect desktop and mobile web traffic, not monthly users or revenue. Gemini’s 1B app monthly active users coexist with a 28% web share because most usage occurs in‑app and Android. The decline is outdated, showing a shift toward in‑app and Android usage. The data also highlight how quickly ChatGPT reached 100 million users in two months, and how token pricing has fluctuated. The report is part of a broader briefing on AI system strengths and market research. It serves as a snapshot of the evolving landscape of AI chatbots and their online presence.

The data come from a stacked print comparison released by Momentic and Similarweb on August 12, 2026, capturing the latest snapshot of AI chatbot traffic. Analysts note that Gemini’s large 1B in‑app user base allows it to maintain a sizable web share despite lower overall traffic. The report underscores how token pricing strategies and rapid user growth can shift market dynamics, hinting at an increasingly competitive AI chatbot ecosystem.