AI Overviews: definition

SEO

By Alvyn Detavernier, founder · published October 28, 2026

Definition

AI Overviews are AI-generated summaries that Google shows at the top of some search results. They synthesize a topic in a few paragraphs and include links to the websites used as sources. Google only shows them when its systems decide they add value beyond classic search results, so many queries never trigger one.

Also known as: Google AI Overviews, SGE (Search Generative Experience)

How AI Overviews work

AI Overviews grew out of the Search Generative Experience tested in Search Labs. To build one, Google may run several related searches across subtopics, a technique called query fan-out, then write a summary with links. They do not appear on every query: Google reserves them for cases where they add something beyond a classic search. AI Mode is a separate, conversational experience for exploratory questions that produces longer answers.

Getting cited in an AI Overview

Google is explicit: there are no additional requirements and no special optimizations. A page must be indexed and eligible to show with a snippet in regular search. No AI text file or special schema.org markup is needed. The advice is standard SEO: allow crawling, link pages internally, provide a good page experience, keep important content in text form, make structured data match the visible text and keep Business Profile and Merchant Center information current.

Controlling what is shown

The nosnippet, data-nosnippet, max-snippet and noindex rules limit what Google can display from a page, in AI Overviews as well as in classic results, so restricting one usually restricts the other. The Google-Extended token in robots.txt does not remove a site from AI Overviews, because it governs training and grounding of Google's models outside of Search.

Measuring the impact

Search Console has a performance report for generative AI features, rolled out to all websites as of August 31, 2026. It counts how many times a link to your site appeared in an AI Overview or AI Mode, by page, device and country; two links from the same site in one overview count as a single impression. Compare those impressions with click trends in the regular Performance report to find queries where the overview absorbs attention.

Example

Example: for "how to get a short-term rental permit in Austin", an AI Overview summarizes the steps and links to the city's official page plus two specialist sites. A property management company with a clear, dated page on the process can be among the cited links while ranking only 7th in classic results.

Sources

AI features and your website, Google Search Central
Generative AI performance report (Search), Search Console Help

Frequently asked questions.

Do AI Overviews reduce website traffic?

It depends on the query. For simple questions, searchers may stop at the summary and clicks drop. For complex topics or purchases, the overview points to detailed sources. Measure query by query by comparing the generative AI report with the Performance report in Search Console.

Can I stop Google from using my content in AI Overviews?

Yes, with the same controls used for snippets: nosnippet or data-nosnippet to hide passages, max-snippet to cap length, noindex to remove the page. These settings also reduce how you appear in classic results. Blocking Google-Extended is not enough, because that token does not govern Search features.

Related terms.

The concepts that go with it, to round out the definition.

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GEO (generative engine optimization)

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SERP

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Featured snippet

A featured snippet is a box Google shows at the top of some search results to answer a question directly, quoting a passage from a web page along...

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Google Search Console

Google Search Console is a free Google service for monitoring a website's presence in search results: the queries that show its pages, clicks,...

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llms.txt

llms.txt is a proposed standard, published by Jeremy Howard in September 2024, for placing a Markdown file at the root of a website that summarizes...

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