Zero-click search and AI summaries: what the evidence says
What independent research says about clicks when AI summaries appear in Google, how to interpret it, and what it means for SEO and AI visibility strategy.
What “zero-click” means
A zero-click search is one where the searcher gets what they need without clicking through to any website — from a featured snippet, a knowledge panel, a weather box, or now an AI-generated summary. Zero-click behaviour predates AI; AI summaries make more of it possible.
What independent research found
The most rigorous public study so far comes from Pew Research Center, which analysed the browsing activity of 900 U.S. adults who consented to share it, covering 68,879 Google searches in March 2025 (Pew Research Center, July 2025). Among its findings:
| Measure | With an AI summary | Without |
|---|---|---|
| Visits where a traditional result was clicked | 8% | 15% |
| Visits where a link inside the summary was clicked | 1% | — |
| Visits where the user ended their browsing session | 26% | 16% |
Pew also found that about 18% of searches in its sample produced an AI summary, and that longer, question-style searches were more likely to trigger one.
Google’s response: Google said the study used a flawed methodology and a query set not representative of Search traffic. Separately, Google’s own documentation says clicks from results pages with AI Overviews tend to be higher quality, with users more likely to spend more time on the site (Google Search Central).
How to interpret it
Both things can be true at once:
- Fewer clicks overall for queries where an AI summary fully answers the question — especially simple informational ones.
- More valuable clicks from people who need more depth, want to compare options or are ready to act.
The impact varies hugely by query type. A definitional question (“what is GST?”) is likely to be answered on the page; a decision question (“which accounting software handles GST for exporters?”) still sends people to sources.
What it means for strategy
- Measure visibility, not only traffic. If some questions are answered without clicks, being named in the answer is the outcome that matters. Track mentions and citations alongside clicks.
- Shift effort toward decision-stage content. Comparisons, pricing explanations, evaluations and detailed how-tos still earn clicks.
- Make definitional content work for you anyway. Clear definitions can earn citations that build recognition, even when clicks are low.
- Watch branded search. Visibility in AI answers can show up as more people searching for you by name later.
- Don’t abandon SEO. AI summaries are built from retrieved pages; the sources still need to be found.
Limits of the evidence
Pew’s data covers U.S. adults, Google only, and March 2025. Search features have changed since, and behaviour in other countries — including India — may differ. Treat any single study as directional and measure your own data: compare click-through rates on queries that show AI summaries with those that don’t in your Search Console data.
More third-party research is collected on our research page.