The number, and what it means exactly
According to an analysis built on browsing data, 68 percent of the big search engine's US searches in the first half of 2026 ended without the user clicking on any result at all. This is not an estimate and not a survey: it comes from browsing chains that were actually observed.
It matters what that covers. Zero-click search includes someone who only checks the weather, and it also includes someone who gets their answer from a summary. Not every zero-click search is a lost visitor — but the share has been rising for years, and summaries are accelerating that rise.
What an independent behavioural study shows
The best data on this does not come from a tool vendor but from a polling institute: browser tracking installed on nine hundred people, and almost seventy thousand real searches.
- Where an AI summary appeared, 8 percent of users clicked on one of the traditional results.
- Where it did not appear, the same figure was 15 percent — close to double.
- The source named inside the summary itself got 1 percent of the clicks.
- After a summary appeared, users abandoned the search at a higher rate without moving on anywhere.
Those four numbers together give the picture: the summary does not take clicks away from the results, it removes the need to click at all.
The causation that was missing until now
For a long time there were only correlations: traffic was falling, and summaries turned up at the same time. On its own that proves nothing.
By 2026 there is something better. One study used a comparative method to look at the traffic of the same content where a summary appeared and where it did not — across more than a hundred and sixty thousand comparable cases. According to the result, the arrival of summaries cut traffic by roughly fifteen percent. That is a causal claim now, not a coincidence.
Who it hurts and who it does not
The loss is not spread evenly, and that is the most important practical thing to know. Content built on factual questions that can be answered in one sentence loses the most — definitions, simple how-tos, unit conversions, opening hours. For those the summary genuinely is enough.
What does not lose as much: cases where the user has to decide, where they compare, where they ask for a price, where they are looking for an answer to their own situation, and where trust matters. Nobody choosing software stops at one paragraph. So the question is not how much you lose, it is which kind your content is.
The AI mode that barely exists yet
One thing is worth putting in proportion, because the trade press would leave you thinking otherwise. The search engine's separate, fully AI-based mode accounted for 0.34 percent of searches in that same study. Not 34 percent — a third of one percent.
So today's traffic loss does not come from AI mode, it comes from the summaries that appear at the top of the ordinary results page. That is a practical distinction: you do have influence over the latter — your page can be cited in it — and that is what the work is worth spending on.
What to do about it
- Look at what kind of content you have. If you answer factual questions, count on a lasting drop in traffic, and do not put your effort there.
- Measure the appearance, not only the click. Being in the summary has value even when nobody clicks — it just takes a different metric.
- Build content that one paragraph cannot replace. Comparisons, calculators, concrete data, first-hand experience.
- Work on getting cited. This is the highest-yielding work available in this field right now — the citation in AI answer engines post goes through it in detail.
Common misconceptions
- "Zero-click is a new phenomenon." It is not: it has been rising for years. AI summaries accelerated it, they did not start it.
- "Every click-free search is a lost visitor." No. Many of them were never going to be visitors.
- "AI mode is what takes the traffic." It does not even reach half a percent of searches. The factor is the summary on the results page.
- "If AI answers, there is nothing to be done." There is: that answer is built on sources, and you can get in among the sources.
What to take away
Zero-click search is not a forecast, it is the present — and how much you lose depends on what kind of questions you answer. Traffic to factual content will keep falling; traffic to content that supports a decision will not fall the same way. The right response is not complaining but two things: a different metric and work on getting cited. How the rest of marketing changed — and where it did not — is what the real effect of AI on marketing post sets out, with the studies.