What the Data Actually Says About GEO in 2026

Figures below come from published studies and industry compilations as of October 2026. This field moves fast, so treat every number as a snapshot, not a law.

The short version

Getting cited by ChatGPT, Perplexity and Google's AI Overviews matters. But most of what is sold as GEO is stronger on confidence than on evidence. A recent survey of generative engine optimization research from 2023 to 2026 concludes that no technique reviewed shows a stable effect across platforms on organic discoverability or on what visitors do afterwards.

Where the famous 40% comes from

The most quoted GEO claim says specific tactics can lift AI visibility by up to 40%. That number comes from one 2024 benchmark. In it, adding quotations to a page raised a position-adjusted visibility score from 19.3 to 27.2, roughly 41%. Keyword stuffing, the old SEO habit, made the score worse.

The catch is in the setup. Each test put five sources in front of the model and edited one. The page was already retrieved, so the test measured how a page gets used once it is in the room, not how it gets in the room. The same survey found that later studies mostly failed to repeat the effect: in one benchmark only 3 of 54 method and domain combinations were significantly positive, and in an end-to-end test, optimizing body text alone slightly reduced final citation.

Where AI engines actually look

If your page is not what the engine retrieves, polishing it does little. A 2026 synthesis of citation studies from 5W Public Relations, built from datasets by Profound, Semrush, Surfer and others, points to a clear pattern:

• ChatGPT leans heavily on Wikipedia, which accounts for about 48% of its top-10 source share in the datasets cited.
• Perplexity leans on community and review sources, with Reddit at about 47% of its top-10 source share, plus review sites such as G2 on commercial queries.
• Google AI Overviews lean on Google's own properties, including YouTube, at about 43% of citations.

Source types differ by engine, and the report itself warns that these patterns are volatile. The practical read is that being present on the third-party places your buyers and the engines already trust matters at least as much as the wording of your own pages.

What AI Overviews do to clicks

Compiled figures from Omnibound's AI Overviews statistics roundup, which we could not verify against every original study, tell a mixed story:

• Pew Research Center found users clicked a traditional result in 8% of visits with an AI Overview, versus 15% without (July 2025).
• Seer Interactive saw organic click-through on affected queries fall to 0.61% in September 2025, then recover to 2.4% by February 2026, against 3.8% on queries without an AI Overview.

So AI Overviews do cost clicks, but the damage is not a straight line down.

The numbers disagree, and that is the point

Depending on the tracker, AI Overviews appear on anywhere from about 16% to about 48% of queries. The share of AI Overview citations that come from the organic top 10 is reported as 17% in one study and 38% in another. Anyone selling you a precise GEO forecast is picking one of these numbers and hoping you do not look at the others.

What we would actually do

1. Make every page readable as raw HTML. One clear H1, a descriptive title and meta description, real alt text, valid schema.org structured data and a canonical tag. It is dull, it is the layer machines read first, and it also helps ordinary search.
2. Put concrete facts on the page. One 2026 study in the survey found that explicit prices and recent dates helped, while formatting alone had weak effects.
3. Show up where engines already look. A complete LinkedIn presence, reviews on the platforms your category uses and mentions on trusted third-party sites.
4. Measure citations, not just rankings. Check whether and how AI engines name you for the questions your buyers ask, and repeat the check, because results change from run to run.
5. Do not buy guarantees. Nobody controls which sources a model retrieves.

FAQ

Is GEO just SEO with a new name?Partly. The foundations overlap: clear structure, useful content and trust signals help both. What differs is that AI engines synthesize an answer and cite a few sources, so being retrievable and being quotable matter more than rank position alone.

Does schema markup get me cited by AI engines?There is no solid evidence that schema alone causes citations. It helps machines understand your page, which is a precondition, not a guarantee.

Should I stop doing SEO?No. Many AI Overview citations still link to pages that rank well in ordinary search, and traditional results still earn clicks on most queries.

How do I check where my own site stands?Our free pipeline audit checks alt-text coverage, structured data, canonical tags and heading structure in about 30 seconds.