ChatGPT sends less than 1% of Google’s traffic

ChatGPT sent just 0.62% as many sessions as Google organic search, according to Marie Haynes’ analysis of 100 websites. The study covered 12 months of GA4 data and more than 145 million sessions.

Adding referrals from other LLMs lifted that figure to 0.73% of Google organic traffic. That’s 0.73% of Google organic traffic, not 0.73% of total website traffic.

Haynes called GEO a “distraction.” The current traffic numbers support her point about scale, but they don’t settle the longer-term question of how important AI search visibility may become.

Google still drives far more traffic today. Marketers can keep that in perspective without ignoring how AI search may change the way customers discover brands and businesses.

Higher conversion rate, much lower volume

Among the 55 sites tracking conversions, 13.8% of ChatGPT visitors converted, compared with 3.02% of Google organic visitors.

That higher conversion rate didn’t make up for the traffic gap. Google organic still drove 27 times as many conversions as all LLMs combined.

“The AI search that is actually sending people to businesses today isn’t ChatGPT. It’s Google,” Haynes wrote.

ChatGPT referral growth stalled

Across the sites in the study, ChatGPT referral traffic stopped growing exponentially in August 2025. Haynes said referrals declined after that.

Haynes’ analysis included websites of different sizes. It did not specify exact reporting dates, industry mix, or how conversions were defined. The study also did not measure changes in Google organic traffic.