AI overviews now clutter 43% of Google searches, but publishers aren't seeing the traffic

Google’s AI-generated summaries are no longer a test. They’re a fixture. New data from Similarweb’s 2026 Generative AI Landscape report shows AI Overviews appeared in 43% of US searches, a dramatic jump from just 15% a year earlier. This isn’t a subtle shift; it’s a fundamental rewiring of how Google presents information. Alongside this, visits to Google’s separate, more conversational AI Mode nearly doubled from 126 million to 279 million in the same period, with the company reporting over a billion monthly users. The way people search is changing, and fast. Similarweb noted a 5.4% increase in average search query length as users shift to more natural, prompt-like language. “People are now adopting a new, more natural way to search and discover,” Ethan Smith, CEO of Graphite, told the firm.

The elephant in the room is traffic. For publishers, an AI-generated answer that scrapes their work without a click is an existential threat. Google has tried to play nice, adding direct links, article suggestions, and more prominent source references in May. But it pointedly did not release any data showing whether these tweaks actually send users to websites. Similarweb’s numbers paint a grim picture of this disconnect. While ChatGPT’s use of web citations quintupled to 6.8% of responses, the pages getting cited are rarely the ones getting visits. Deep content pages—articles, product specs—account for 65% of cited URLs, but nearly 59% of what little referral traffic exists lands on a bland homepage. The AI is reading the full article; the user is getting a summary and, if they click at all, often ending up at the front door, not the room they were looking for.

This citation-traffic gap exposes the dirty secret of AI search. A citation is not a click, and a click is not a visitor. Similarweb found that citations spike in sectors like travel, retail, and sports where fast-changing data like prices and scores are valuable to the AI. But the firm’s deeper analysis shows the content supporting the answer and the page a user might visit serve completely different functions. The AI mines the deep, specific page for raw material to synthesize an answer, but the user’s subsequent click is a generic, low-intent probe that defaults to the homepage. It suggests a future where AI answers satisfy most queries on the spot, and the web’s deep content becomes little more than free training data for the models that make it obsolete. That’s a great deal for Google, but a terrible one for anyone who actually creates the information.

Meanwhile, the broader AI landscape is booming, providing cover for this messy transition. Similarweb pegs total monthly visits to generative AI sites at 9.5 billion, a 70% year-over-year surge, with 655 million unique monthly visitors. Crucially, the report finds people aren’t picking one AI tool and abandoning the rest. Most ChatGPT users still use Google. There’s significant audience overlap between ChatGPT, Gemini, and Claude. Users are sampling a buffet of AI, not pledging loyalty to a single platform. For Google, the strategy is clear: defend its core search empire by making AI the interface, not a separate destination, and hope the traffic question gets lost in the noise of staggering user growth numbers.