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What Are Google AI Overviews? Definition & Guide (2026) | GEOly | GEO Data Platform for DTC Brands
What Are Google AI Overviews? How They Work and How Brands Get Cited (2026)
Summary
An AI Overview is the Gemini-generated answer Google places above all organic results, synthesizing multiple sources into a cited summary — and since users click roughly half as often when one appears, earning a citation inside it now matters more than ranking first.
2026/07/05
7 min read
An AI Overview is the AI-generated answer Google displays at the very top of the search results page, above every organic listing. Built on Google's Gemini models, it synthesizes multiple indexed web pages into a short summary with citation links, so many users get what they need without clicking through to any website. For brands, being named or cited inside that summary has replaced ranking first as the most valuable position in Google Search.
Key takeaways
AI Overviews (formerly Search Generative Experience, or SGE) launched in the US in May 2024 and passed 2 billion monthly users across 200+ countries by mid-2025.
When an AI Overview appears, users click traditional results about half as often — 8% versus 15%, per Pew Research Center — making it the biggest single driver of zero-click search.
There is no special markup or paid placement for inclusion. Google grounds each Overview in indexed pages it judges relevant, authoritative, and easy to quote.
Google Search Console does not separate AI Overview data from regular search totals, so dedicated per-engine tracking is the only way to know whether you appear.
The core optimization move is answer-first content: open with a 40-60 word direct answer, support it with evidence, and keep the page fully crawlable.
From SGE to AI Overviews: a short timeline
Google spent a year testing this format before committing to it.
May 2023: Google announces Search Generative Experience (SGE) as an opt-in experiment in Search Labs.
October 2024: coverage expands to more than 100 countries and territories.
March 2025: Google introduces AI Mode, a separate conversational search tab, in Labs; it reaches all US users by mid-2025.
2025-2026: Alphabet reports over 2 billion monthly AI Overviews users in 40+ languages, with the feature covering informational, commercial, and local queries.
How AI Overviews work
Under the hood, an AI Overview is a three-stage pipeline: fan-out, retrieval, synthesis. Gemini first breaks the query into multiple related sub-queries (the same mechanism behind grounding queries), retrieves candidate pages from the regular search index for each one, then writes a summary grounded in those pages.
The snapshot: a text summary that answers the question directly, often in under 100 words.
Link cards: citations to the source pages the model drew on, typically three to five.
Follow-ups: suggested next questions that hand the user off into AI Mode for a full conversation.
Two technical details matter for brands. First, AI Overviews use the standard Googlebot crawl — if you are indexed for regular search, you are eligible. Second, blocking the Google-Extended user agent does not remove you from AI Overviews; per Google's documentation, only snippet controls like nosnippet and max-snippet limit what the feature can quote. See AI crawlers for the full control matrix.
Citation source analysis: source type distribution and the domains AI engines cite most — Source: GEOly AI (app.geoly.ai)
Why AI Overviews matter in 2026
The traffic math changed. Pew Research Center's analysis of real US browsing behavior found that when an AI summary appeared, only 8% of users clicked any traditional result, versus 15% without one — and just 1% clicked a source cited inside the summary. Users also ended their session entirely on 26% of pages with a summary, against 16% without. That is the zero-click search effect in hard numbers.
The picture is not purely negative, though. Clicks that do come out of an AI Overview are higher intent: the user has read the synthesis, compared options, and chosen your link deliberately. For commercial queries, Overviews increasingly include product panels that feed directly into generative commerce journeys.
The strategic shift is from ranking to inclusion. The question is no longer "do we rank first?" but "are we named in the snapshot, and do we hold a link card?" — a share-of-answer question best measured as Share of Model.
How to earn citations in AI Overviews
Optimizing for AI Overviews is the Google-specific slice of AEO. Five practices consistently correlate with inclusion:
Lead with the answer. Open each page or section with a direct answer in inverted-pyramid style, then add depth. Gemini quotes passages, not pages — quotable passages win.
Demonstrate E-E-A-T. Named authors, first-hand experience, and original data give the model a reason to trust you over an aggregator. See E-E-A-T in the AI era.
Add structured data. Schema markup does not guarantee inclusion, but it disambiguates your entities, products, and prices during retrieval. See structured data for AI search.
Stay crawlable. Server-render key content, keep pages fast, and never block Googlebot from the passages you want quoted.
Cover the full question space. Overviews answer clusters of related sub-queries, so content gap analysis against the fan-out matters more than single-keyword targeting.
Google has also said Overviews are designed to surface "hidden gems" — unique perspectives from forums and niche sites — which is why generic rewrites of existing answers rarely get cited.
How to measure your AI Overview visibility
Here is the uncomfortable part: Google Search Console folds AI Overview impressions and clicks into overall search totals with no separate filter. Rank trackers built for blue links miss the feature entirely. The only reliable method is to sample real prompts and record what actually renders.
That is how GEOly AI approaches it. The platform tracks Google AI Overview and Google AI Mode as two of the seven engines it monitors, alongside ChatGPT, Gemini, Perplexity, Copilot, and Grok. For each tracked prompt it records whether an Overview fired, whether your brand was named in the snapshot, and whether your domain won a link card. Those signals roll into an AIGVR score (weighted 40% answer position, 25% mention frequency, 25% citations) plus mention and citation rates you can benchmark against competitors — the full metric set is covered in our AI search visibility KPI guide. A 29-point GEO audit then flags the crawlability and content issues keeping pages out of the Overview.
Cross-platform visibility matrix comparing brand mentions across ChatGPT, Gemini, Google AI Overview, AI Mode and Perplexity — Source: GEOly AI (app.geoly.ai)
AI Overviews vs adjacent features
Three distinctions come up constantly:
AI Overviews vs AI Mode: an Overview sits on top of the classic results page; AI Mode is a separate, fully conversational tab with no traditional listings. They share the Gemini backbone but behave — and cite — differently.
AI Overviews vs featured snippets: a featured snippet quotes one page verbatim; an Overview synthesizes several sources into new text with multiple citations.
AIO optimization vs GEO: winning AI Overviews is one engine's worth of GEO, which spans ChatGPT, Perplexity, Copilot, and every other generative engine where your buyers ask questions.
FAQ
How do I get my brand cited in AI Overviews?
Be indexed, be quotable, be trusted. Publish passages that answer specific questions directly in 40-60 words, back them with first-hand expertise and original data, and mark up entities with schema. Then track a real prompt set to confirm which pages earn citations and iterate on the ones that don't.
Can I stay in Google Search but opt out of AI Overviews?
Not cleanly. Blocking Google-Extended has no effect on AI Overviews, because the feature uses the normal search index. Your only levers are snippet controls (nosnippet, data-nosnippet, max-snippet), which limit what can be quoted but also shrink your regular snippets.
What's the difference between AI Overviews and Google AI Mode?
AI Overviews appear above standard results on the normal search page, and only for queries where Google decides a summary helps. AI Mode is a dedicated conversational tab — closer to ChatGPT than to a SERP — with follow-up questions and no ten blue links. Brand visibility often differs sharply between the two, which is why they are best tracked as separate engines.
Does Search Console show AI Overview traffic separately?
No. Google includes AI Overview impressions and clicks in overall Search performance data without a separate filter, so you cannot isolate the feature in GSC. Third-party monitoring that samples live prompts is currently the only way to measure your presence directly.
