Google’s AI Search Features Reach Billions, But Audience Figures Differ

Google’s AI Overviews and AI Mode each reach more than 1 billion users a month, while U.S. survey and app figures count different audiences and time periods.

Among 5,119 U.S. adults surveyed Feb. 17-23, 2026, 49% had used an AI chatbot at some point and 24% used one daily. For specific assistants, 44% had tried ChatGPT, 24% Gemini and 6% Claude. These are self-reported U.S. usage figures, not exclusive market shares.

Company counts cover different periods and activity levels. ChatGPT had 1.2 billion weekly users in September 2026. The Gemini app had 950 million monthly active users in July 2026. Weekly users and monthly active users use different measurement windows, so the totals do not count people on the same basis.

In June 2026, AI Overviews had more than 2.5 billion monthly users and AI Mode had more than 1 billion. Both are features within Google Search, so their reach counts are distinct from standalone app audiences such as the Gemini app.

A September 2026 worldwide ranking of AI chatbot and tools websites placed ChatGPT first, Gemini second and Claude third. The ranking covered websites; it did not count use through mobile apps, APIs or products with built-in AI.

A separate browser-activity sample of 68,879 Google searches in March 2025 showed an AI summary in 18% of searches. Traditional search-result links were clicked on 8% of visits when a summary appeared, compared with 15% when one did not. Links inside summaries were clicked on 1% of summary-page visits.

The figures describe different measures: whether survey respondents had ever tried a chatbot, weekly or monthly app use, monthly reach for Search features, website rankings and clicks in sampled searches. They do not offer a like-for-like comparison of ChatGPT, Gemini and Claude. The March 2025 search sample compares visits with and without summaries; it does not measure behavior changing over time.