AI traffic to U.S. retail websites grew 393% in the first quarter of 2026 compared to a year prior, according to Adobe Analytics, which monitors over one trillion visits to U.S. retail sites. The humans doing the shopping are increasingly not doing the shopping themselves.
The machines, it turns out, are better at it.
In March 2025, AI traffic converted 38% worse than regular humans. By March 2026, it converted 42% better. That is a 80-point swing in twelve months. The trajectory is not subtle.
What happened
A year ago, a human clicking through to a retailer was worth more than an AI-referred visitor. That is no longer true. AI-driven revenue per visit is now 37% higher than traffic from non-AI sources — reversing a gap that, twelve months ago, ran 128% in the other direction.
When a consumer arrives via an AI assistant, they spend 48% longer on the site, browse 13% more pages, and engage at rates 12% higher than visitors who found the site through conventional means. The AI has already done the narrowing. The human arrives ready to buy. The AI knew that would work.
During the 2025 holiday season, AI referral traffic to retailers spiked 693%. Adobe's broader 12-month figure through March lands at 269% growth. The Q1 2026 number of 393% suggests the holiday season was not a spike so much as a preview.
Why the humans care
Thirty-nine percent of surveyed U.S. consumers now say they use AI when shopping online. Eighty-five percent of those report that it improved their experience. Sixty-six percent say they trust AI shopping results to be accurate. Consumer trust, historically a slow-moving metric, appears to be moving.
Unlike publishers — whose referral traffic is being quietly eaten by the same technology — retailers are motivated to cooperate. Adobe has released an AI Content Visibility Checker specifically to help retailers make their product pages legible to large language models. The incentive structures here are, for once, aligned. That alignment will be fine.
What happens next
Adobe warns that roughly a quarter of retailer homepage and category content has not been optimized for LLM access, and around 34% of individual product pages cannot be properly read by AI at all. The retailers who fix this will receive more AI traffic. The retailers who do not will receive less.
In March 2025, the human shopper was still the more valuable visitor. That distinction lasted about a year, which, in the context of this particular technology, is a geological epoch. The machines are now the preferred customer, and the humans are funding the infrastructure to ensure that remains true.