AI Overview users who engage daily are far more likely to click sources

The people who use AI Overviews every day are the ones most likely to click through, and that cuts against the easy story that AI search only steals traffic. GWI data showed 50 percent of daily users clicked cited sources, compared with 28 percent among weekly-or-few-times-a-month users and just 14 percent among lighter users, a 3.5x spread that makes frequency of use look a lot more important than the usual click-through headline.

Google put the scale of the shift in plain numbers at I/O 2026. The company said AI Overviews now have more than 2.5 billion monthly active users, up from the more than 2 billion monthly users Google had cited in late 2025. Google also said AI Mode has surpassed 1 billion monthly users and that queries in AI Mode have more than doubled every quarter since launch. On June 3, Google added dedicated Search Console reports for generative AI visibility, but those reports stop at impressions, pages, countries, devices and dates. They do not show clicks, which is exactly where the measurement blind spot starts.

That gap matters because agencies still get judged on a narrow reading of CTR when AI search now shapes the path before a click ever happens. AI Overview exposure should be treated as top-of-funnel influence plus selective click potential, not a binary winner-or-loser channel. The practical work is different too: cited-source readiness matters, but so does building pages that answer the follow-up questions people ask after the AI summary has already framed the issue. That is where assisted visits, branded search lift and on-SERP visibility become more useful than a naked CTR readout.

The broader evidence points the same way. Pew Research Center found that 58 percent of respondents ran at least one Google search in March 2025 that produced an AI-generated summary, and that users were less likely to click result links when a summary appeared. Pew also found they very rarely clicked the sources cited in those summaries and were more likely to end the browsing session altogether. A 2026 Washington University in St. Louis study of 55,393 trending queries over 40 days found AI Overviews activated in 13.7 percent of searches overall and 64.7 percent of question-form queries, while nearly 30 percent of cited domains did not appear in the first-page results and 11.0 percent of 98,020 atomic claims were unsupported by cited pages. The message for marketers is simple: AI Overviews do not erase the click, they change which users click, when they click and how agencies should explain performance.