Previsible, the AI discovery agency for GEO and modern search, today released the third edition of its AI Traffic Study, the industry's earliest and longest-running look at GEO trends, run and refreshed from November 2024 to May 2026. The latest edition analyzes 6.77 million AI-driven sessions across 166 websites spanning SaaS, e-commerce, finance, legal, health, insurance, education, and publishing industries. The study highlights where brands should focus for the second half of 2026.
Previsible analyzes 6.77M AI sessions across 166 sites over 19 months.
Google AI Overviews/AI Mode drive more AI-influenced traffic than all LLM assistants combined.
ChatGPT leads standalone LLMs with 92.4% of trackable referral traffic.
Gemini grew 3.2x; Claude grew 64x, surpassing Perplexity in March 2026.
E-commerce AI referral traffic rose 37x.
Study spans SaaS, e-commerce, finance, legal, health, insurance, education, and publishing.
The study found that AI discovery happening inside Google, through its AI Overviews and AI Mode, represents more AI-influenced traffic than every LLM assistant combined, and it should remain the priority surface marketers work to win. Among the destinations where people query AI LLMs directly, Previsible's study found ChatGPT leads by a wide margin, carrying 92.4% of trackable standalone referral traffic and still climbing. Gemini grew 3.2x with steady consistency and now stands as the second most visible model behind ChatGPT. Claude grew 64x over the tracked period and moved past Perplexity in March 2026, with particular strength among developers, technical buyers, and professional services.
Industry variances have emerged that marketers should use to target content for specific LLM citation visibility. Across models, e-commerce content saw AI referral traffic rise 37x as shoppers increasingly arrive on product pages with intent already formed. The report includes data from SaaS, e-commerce, finance, legal, health, insurance, education, and publishing industry websites.
David Bell, Chief Product Officer and report author at Previsible, stated: "The foundation brands built in search matters more than ever. Start by becoming a source Google's AI results want to cite by building the site architecture and content signals AI systems rely on to cite you, then win ChatGPT as the leading standalone surface. The teams that lean in now will be the ones AI chooses to surface."
Jordan Koene, CEO of Previsible, added: "David's research brings focus to one of the most important, and often overlooked, parts of AI search: the value of engaged users who visit and interact with brand websites. As more brands evaluate the impact of AI-driven discovery, this perspective can help transform how teams measure success."
Bell and the Previsible team recommend five core efforts to win in AI search: create citation-worthy evidence, build authority across trusted third-party sources, make websites accessible to AI systems to read and extract, optimize for answer journeys, and measure business impact rather than site-wide visibility alone.
About Previsible
Previsible is an AI discovery agency helping organizations move from chaos to clarity in modern search. Founded by former in-house search leaders from eBay, Tennis Warehouse, Yahoo, and Searchmetrics, the company helps brands earn visibility across the surfaces where discovery happens today and prepare for the surfaces of tomorrow. Through research like its ongoing AI Traffic Study, Previsible gives marketing and SEO teams a clear, current view of how AI shapes discovery and where to invest.
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