Google AI Overviews are AI-generated snapshots of key information that Google shows in some search results, with links to web pages that support the answer. Google shows one when its systems judge that generative AI will be especially helpful, for example when a question needs information drawn from a range of sources.
How AI Overviews work
Google began rolling AI Overviews out to everyone in the U.S. on 14 May 2024 and has since made them available in many more countries and languages. In 2026 it said they had over 2.5 billion monthly active users.
They are rooted in Google Search's core ranking and quality systems. Google's guide to its generative AI features says they use retrieval-augmented generation, also called grounding: the model relies on Google's core ranking systems to retrieve relevant, up-to-date pages from the Search index. AI Overviews may also use query fan-out, running several related searches across subtopics before writing the response.
To be eligible as a supporting link, a page must be indexed and eligible to appear in Google Search with a snippet. Google says there are no additional requirements and no special optimizations needed. How to appear in Google AI Overviews covers the practical steps.
Why AI Overviews matter for SEO and AEO
They sit on the ordinary results page, so they are where SEO and AEO meet. Two changes in 2026 give site owners more say:
- A control. Search Console's Search generative AI setting (Settings, then Search generative AI) lets a site include or exclude its links and content from AI Overviews, AI Mode and generative AI features in Discover. Excluded sites get no traffic or impressions from those features. Google says the setting is not a ranking signal for the rest of Search, generally takes a few days to apply, and reached all websites worldwide by 31 August 2026.
- A report. The Generative AI performance report counts how often links to your pages were shown in AI Overviews and AI Mode, by page, country, device and date. See how to use Google Search Console for AI search.
Google's snippet controls (nosnippet, data-nosnippet, max-snippet and noindex) still limit what it shows from a page.
An example: what AI Overviews cited in our scans
For our questions about AI visibility software (how we measured), Google returned 523 AI Overviews in the 30 days to 22 September 2026, with 4,117 third-party citations between them, or 7.9 per answer. The most-cited sites were youtube.com (371 citations), google.com itself (263) and reddit.com (123). What Google AI Overviews and AI Mode cite breaks this down further.
Common misconceptions
- "You need special markup or an llms.txt file." Google says no new machine-readable files, AI text files or special schema are needed, and that Google Search ignores llms.txt files.
- "Blocking Google-Extended keeps you out of AI Overviews." Google says Google-Extended does not affect inclusion in Google Search. The switch for AI Overviews is the Search generative AI control, which in turn does not affect AI training.
- "AI Overviews and AI Mode show the same links." Google says the two may use different models and techniques, so their responses and links vary. See Google AI Mode.