What Is AI Overviews? What It Changes for Your Business

Key points

• Google shows an Overview only when its systems decide one adds something to regular results, so it often doesn't appear.
• A page must be indexed and eligible for a snippet to appear as a supporting link, and Google says no special optimization is required.
• Being named, being linked and getting the click are separate results, and Google's reports show you only part of that.

How does AI Overviews decide what to show?

Google's guidance for site owners says AI Overviews are shown only when its systems determine that one is "additive to classic Search," and that they often don't trigger. Pew found that 18% of the Google searches in its March 2025 U.S. sample produced an AI summary. That average is dated, and your own category could run higher or lower.

Google says AI Overviews may use a "query fan-out" technique, issuing multiple related searches across subtopics and data sources. As the response is generated, its models identify more supporting web pages. So a page that answers one part of a buyer's question, such as price or timing, may be considered even when it doesn't match the words the buyer typed.

Google's help page for AI Overviews also warns that "AI responses may include mistakes." Read what an Overview says about your services and service area. The reports covered below count links and clicks, so reading the summary is how you catch a mistake.

Is AI Overviews the same as AI Mode or ChatGPT?

They're separate, and each can show different sources. Google says AI Mode and AI Overviews "may use different models and techniques, so the set of responses and links they show will vary." Google's help page says a searcher can move from an Overview into a deeper conversation in AI Mode, so the links a buyer sees may change partway through.

ChatGPT, Perplexity, Gemini and Claude are different products again. A citation in an Overview doesn't show that you appear in any of them. Vector Index AI's published local citation study didn't sample AI Overviews, so the click and frequency figures in this article come from Pew and Ahrefs.

What does AI Overviews do to your clicks?

These two figures measure different things, so keep them apart.

• Pew Research Center analyzed data from 900 U.S. adults and 68,879 unique Google searches from March 2025. A regular result got a click on 8% of visits with a summary and 15% of visits without one. A link inside the summary got a click on 1% of visits with a summary.
• Ahrefs published its update in February 2026. It took 150,000 keywords with an AI Overview and 150,000 informational keywords without one, then compared December 2023 with December 2025. An Overview correlated with a 58% lower average clickthrough rate for the top-ranking page. Ahrefs notes the two-year gap, and a correlation doesn't prove the cause.

Neither study measured the searches your own buyers run, so neither can tell you how many calls you'd lose. Pew's 1% does give you something to use. A link inside a summary drew few clicks in that data, so judge an Overview first by whether it names you correctly and links to the right page.

What counts as showing up in an AI Overview?

Four separate results get called "showing up." Log each on its own, because Google reports only some of them.

Result	What it tells you	Where you see it
An Overview appears on your buyer's question	Google summarized that search on that run	Run the search yourself on the All tab, since Google's Web filter leaves Overviews out
Your business is named in the summary	The answer mentions you, with or without a link	Only by reading the summary
Your site is a supporting link	Google showed a link to your page	Search Console's generative AI performance report
A buyer clicks	Someone reached your page	Search Console's Performance report, within the Web search type

Search Console's generative AI performance report counts impressions, meaning how many times links to your site were shown in generative AI features. The features it covers are AI Overviews and AI Mode. Google says it reached all websites worldwide as of August 31, 2026. Its help page doesn't list a query breakdown, so your own log is what ties a result to a specific question. A mention with no link isn't a link impression.

Hypothetical example: a roofing company logs 10 buyer questions at four runs each, for 40 runs. An Overview appears on 20 of them. The company is named on 4 of those 20 (20%), and one of those 4 also links its site (5% of the 20). Only that linked appearance is the kind of thing the report counts. The other three mentions exist only in the company's log, so read those first.

Vector Index AI's audit uses the same count, four Google searches per question, recording the AI Overview when Google shows one. For the full logging method and the settings that can hide an Overview, see why a Google AI Overview isn't showing up.

How do you get your site into AI Overviews?

Google says a page must be "indexed and eligible to be shown in Google Search with a snippet" to appear as a supporting link, and that there are "no additional requirements" to appear. That makes your page a candidate. Google still picks the sources. Check the basics in this order.

1. In Search Console, open Settings, then Search generative AI, and confirm your site isn't excluded. Google says an excluded site won't receive "any traffic or impressions from these features."
2. Run the page through URL Inspection to confirm it's indexed.
3. Ask whoever runs your site whether a nosnippet rule covers the page. Google says nosnippet also stops content from being used as a direct input for AI Overviews and AI Mode.
4. Open the pages an Overview cites for your buyer's question. Find one thing they answer that yours doesn't, change that one thing, and recheck on the same schedule as your log.

You don't need a rebuild to start. Google lists no additional technical requirements, so ask any vendor quoting you for special AI Overview markup to show you where Google requires it. Your first check takes a browser and a spreadsheet.

Now you know what AI Overviews is and what to log. Next, see whether the other engines treat you the same way. How to show up in AI search results shows how ChatGPT, Perplexity and Gemini answered the same 16 questions from different source sets, so you can decide which engine and which pages to work on first.