ChatGPT Owns the AI Traffic You Can Measure
A study making the rounds this month landed on a number that sounds like a verdict. ChatGPT, it found, drives 92% of AI referral traffic. If you run a website and you’ve been unsure where to point your AI efforts, that looks like a clear answer, put everything into ChatGPT. The real story is more useful than the headline, and it starts with what that 92% is actually counting.
What the study found
The research comes from Previsible, an SEO agency that’s been tracking AI traffic longer than most. Its latest report, out in early July, analyzed 6.77 million AI-driven visits across 166 sites, from late 2024 through this May. Across all of it, ChatGPT accounted for 92.4% of the referral traffic these sites got from standalone AI assistants, up from around 84% at the end of last year. The total volume is climbing fast too, close to ten times what it was 19 months earlier.
The gap behind ChatGPT is wide. Gemini has settled in as a steady second. Claude grew sharply and passed Perplexity in March, with particular strength among developers and technical buyers. Perplexity has fallen well off its peak, partly because it now keeps users inside its own tools instead of sending them out, and Copilot has all but disappeared from the referral picture. So among the chat assistants people use directly, one platform is doing nearly all the sending.
The part of the number people miss
There’s a catch, and it’s a big one. That 92% covers standalone AI assistants only, the ChatGPTs and Geminis and Claudes that people open as separate apps. It leaves out the biggest AI surface of all, Google’s own AI Overviews and AI Mode, built right into search. Previsible left those out on purpose, because they don’t produce a clean, trackable referral the way a standalone assistant does. And the report is blunt about what that omission means. AI discovery happening inside Google almost certainly drives more traffic than every standalone assistant combined.
So the fuller read flips the headline around. ChatGPT wins the AI traffic you can measure. Google, through the AI woven into regular search, is very likely the bigger source of AI-influenced visits, only close to impossible to count cleanly. Anyone who takes 92% as a reason to ignore Google and chase ChatGPT alone is reading half the board.
The finding that changes the work
Market share is the least useful part of the study. The finding that should change how you work is about where AI traffic lands once it arrives. Across platforms, roughly a quarter of AI-referred visitors get dropped onto a site’s internal search results page rather than the page that answers their question. ChatGPT does it with nearly 29% of its referrals. The model trusts your domain enough to send someone, but can’t always pick the right page, so it hands them your search box and lets them figure it out.
That reframes internal site search from a housekeeping feature into an actual entry point. If a quarter of your hardest-won AI visitors land on a weak search page and bounce, the model did its job and your site lost the visitor at the door. It’s a fixable problem that almost nobody treats as one.
One more useful wrinkle. The assistants don’t all behave the same way. ChatGPT and Gemini tend to trust a domain and land somewhere on it, while Claude and Perplexity pick specific pages and lean toward long-form content. So if your visibility rides on in-depth editorial work, those two can count for more than their traffic share suggests.
What actually earns the traffic
Put the whole study together and it argues for something reassuringly familiar. The author’s own advice is to start by becoming a source Google’s AI wants to cite, then win ChatGPT on top of that. Both halves of that come from the same foundation, a site with real authority that other credible sources point to and quote. The same authority earns citations inside Google’s AI, and it’s what gets you surfaced by ChatGPT, which leans heavily on the same signals of trust and consensus across the web.
None of that is a platform trick. It’s the work digital PR and link building have always done, building the kind of reputation that makes every system, old search or new AI, want to name you. The platforms will keep trading share. The brands that get cited across all of them are the ones whose authority was earned in the first place.