Half of French Shoppers Ask an AI For Advice Before Buying, Your Pixel Never Sees It

A Botnation study, run June 19-26, 2026 across 4,204 respondents (3,103 consumers, 1,101 sellers), lands a number that should worry anyone running retargeting: 49% of French shoppers use an AI like ChatGPT, Claude or Gemini before buying a product. Not instead of Google, on top of it. 16% do it for big purchases, 13% to cross-check details on other sites, 11% every time, and 9% just to get a summary of customer reviews.

None of that step leaves a trace in your tools. No cookie fires, no pixel, no UTM to grab. A shopper who spent ten minutes asking ChatGPT to compare options before landing on your site shows up as a “cold” visitor in your funnel, even though they’ve already compared alternatives, ruled out competitors and settled on a price range. Your usual retargeting sequence, the one built off product-page visits, never sees that detour. It keeps telling the story of a straight-line journey that no longer exists for half your visitors.

The telling part is that this stays advisory, not transactional: 58% would accept an AI agent recommending products, but only 10% would let it actually buy on their behalf. AI is settling in upstream, at the comparison stage, exactly where you have no measurement tool. And on the seller side, 74% are already considering using AI to advise their own customers, which means the loop is closing from both ends of the same journey.

What it means for your account

You can’t retarget a step you can’t track, so the real fight moves upstream: what the AI reads and summarizes is your product pages, your reviews, your structured content. If that material is thin or poorly structured, the AI summarizes it badly or skips it, and the better-documented competitor gets the mention instead. On the measurement side, you’ll need to accept that a growing share of conversions comes from an “AI-influenced but invisible” journey, instead of still hunting for the last click that supposedly decided everything.