AI Overviews now touch 1 in 3 commercial queries
Transactional query presence jumped from 2% to 14% in just four months. Semrush's 10M-keyword dataset, BrightEdge's commercial tracker, and Seer Interactive's 2.4B-impression longitudinal study — here's what the numbers actually say.
Brands cited inside AI Overviews earn 35% more organic clicks and 91% more paid clicks than non-cited competitors on the same SERP. Digital Applied / Launchcodex, Mar 2026
Google AI Overviews began their life as an informational-query feature. Ask "how does photosynthesis work" and you'd get a summary. Ask "best CRM for small business under $50/seat" and you'd still get blue links. That split no longer holds. Three major datasets published in Q1–Q2 2026 confirm that commercial queries are now inside the AI Overview layer at scale — and the brands cited within them are capturing disproportionate commercial outcomes.
Where prevalence stands in 2026
The headline numbers vary by dataset composition and query intent, but direction is consistent. BrightEdge's commercial-vertical tracker — focused on buying-intent queries — recorded 48% AI Overview prevalence by March 2026, a 58% year-over-year increase. Conductor's Q1 2026 benchmark across 21.9 million queries put the figure at 25%. Semrush's broader 10M-keyword dataset showed a peak of 24.6% in July 2025, followed by a pullback to 15.7% by November, before resuming its climb into 2026.
Sources: SQ Magazine, May 2026; Semrush / Search Engine Land, Dec 2025
The commercial shift in four months
The most significant single data point is the transactional query jump. In November 2025, Semrush measured AI Overviews appearing on roughly 2% of transactional queries. By March 2026, that figure had reached 14% — based on a dataset of 20.9 million shopping SERPs. That's a 7× increase in four months. The commercial invasion is happening faster than most SEO teams budgeted for.
Comparison queries (X vs Y format) were always the canary: they've triggered AI Overviews at 95.4% of the time since early 2026. These are exactly the queries where buyers are evaluating alternatives — the highest-value moment in the purchase journey.
The CTR picture is more nuanced than the headlines
Seer Interactive's longitudinal study — 2.43 billion impressions across 53 brands and 5.47 million queries — is the most comprehensive CTR dataset in the field. Its key finding: organic CTR on AI Overview queries fell from 1.76% in early 2025 to 0.61% by September 2025, a 65% collapse. It then rebounded 85% to 2.4% by February 2026. The prevailing narrative of permanent CTR erosion doesn't match the data.
The more important finding: CTR on queries without an AI Overview actually rose from 2.8% to 3.8% over the same period. The gap between AIO-present and AIO-absent queries is currently ~37%. That gap is the planning assumption teams should be running on.
Cited brands win the commercial outcomes
Data published by Digital Applied in March 2026 provides the clearest commercial case for AI visibility investment. Brands cited inside AI Overviews earn 35% more organic clicks and 91% more paid clicks compared to non-cited competitors on the same queries. Being named inside the AI response is more commercially valuable than holding the top organic position below it.
"Citation is the new position one for queries where AI Overviews appear."
Implications for GEO strategy
The playbook is shifting from "win position one" to "win the citation inside the AIO for queries where it appears." For most B2B and e-commerce teams, that means: audit which of your target queries now trigger AIOs, identify which competitors are cited there, and restructure those pages to lead with a direct, extractable answer.