What it is
An AI Overview is the generated answer Google places above the organic results when it judges a summary will help. It combines information from several pages into a short answer and links to sources beside or within it. Google describes the feature as a way to get the gist of a complicated question quickly, with links as a jumping-off point.
AI Mode is the related, conversational surface: a full chat-style search for questions that need comparison or several steps of reasoning. Both use what Google calls query fan-out, running related searches behind the scenes, which is why the pages they cite are not always the pages ranking for the words you typed.
Why it matters
AI Overviews reach a very large audience, and they change behaviour on the results page. When a summary appears, people click organic results less often and sometimes end the search there. For publishers and brands, ranking first can now mean appearing below an answer that already satisfied the searcher.
Google says there is nothing special to do to qualify, and that clicks from pages with AI Overviews tend to be higher quality. The practical consequence is that ordinary search fundamentals still decide eligibility, while being among the cited sources becomes a separate goal worth measuring.
- >1.5 billionGoogle said at I/O 2025 that AI Overviews have scaled to over 1.5 billion users and are now in 200 countries and territories, and are driving over 10% growth in the types of queries that show them in the U.S. and India.Google, I/O 2025 keynote announcements, 20 May 2025, 15 Sept 2026
- 18%Pew Research Center found that 18% of the Google searches in its March 2025 study produced an AI summary, and users ended their browsing session on 26% of pages with one, against 16% of pages with only traditional results.Pew Research Center, Google users are less likely to click on links when an AI summary appears, 22 July 2025, 15 Sept 2026
- 34.5%Ahrefs, analysing 300,000 keywords, found the presence of an AI Overview correlated with a 34.5% lower average clickthrough rate for the top-ranking page.Ahrefs, AI Overviews reduce clicks, 17 April 2025, 15 Sept 2026
- Google’s documentation states there are no additional requirements to appear in AI Overviews or AI Mode, nor other special optimizations necessary, and that clicks from results pages with AI Overviews are higher quality.Google Search Central, AI features and your website, 15 Sept 2026
How to do it
- 1
Find which of your important queries trigger an AI Overview by checking them in a clean browser session over several days, and note whether your pages are cited.
- 2
Compare Search Console impressions and clicks for those queries before and after Overviews appeared; rising impressions with falling clicks is the typical pattern.
- 3
Make the page answer the question directly in its opening lines, then support it with specifics, lists and tables that can be quoted.
- 4
Cover the follow-up questions a fan-out search is likely to run, on the same page or closely linked pages.
- 5
Decide deliberately whether to limit use of your content with nosnippet, data-nosnippet or max-snippet, knowing these controls also limit how you appear in AI features.
Do this on your own site
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Common mistakes
- Expecting an AI Overview-specific report in Search Console; the data is counted in the ordinary Web totals.
- Treating a drop in clicks as a ranking loss when positions are unchanged and an Overview has appeared above them.
- Chasing special markup or tricks for eligibility when Google states no additional requirements exist.
- Using nosnippet across a site to protect content, then losing citation opportunities as well.
An example
Where the clicks go
Pew’s browsing data shows the pattern plainly: on searches with an AI summary, clicks to ordinary results roughly halve and clicks on the summary’s own source links are rare. That is why brands now track two things for the same query: whether they rank, and whether they are cited in the summary above.
Not to be confused with
- Featured snippet
- A featured snippet quotes one page’s text at the top of results. An AI Overview writes a new answer from several pages and links to them.
- Zero-click search
- Zero-click search is the broader behaviour of searches ending without a click. AI Overviews are one of the features that contribute to it.
- Answer engine optimization
- AI Overviews are a surface; answer engine optimization is the practice of structuring content to be used as the answer on surfaces like it.
Sources
- 1Google, I/O 2025 keynote announcements, 20 May 2025 read 15 Sept 2026
- 2Pew Research Center, Google users are less likely to click on links when an AI summary appears, 22 July 2025 read 15 Sept 2026
- 3Ahrefs, AI Overviews reduce clicks, 17 April 2025 read 15 Sept 2026
- 4Google Search Central, AI features and your website read 15 Sept 2026