Thought Leadership — GEO & AI Search
AI Overviews Just Moved Into Commercial Search. Here's What That Means for Your Funnel
TL;DR: New data from Semrush shows AI Overviews expanding sharply into commercial-intent search, up 71% for commercial keywords between November 2025 and April 2026, while transactional keywords actually declined 5% over the same period. Google is starting to synthesize the vendor-comparison work buyers used to do across five open tabs, directly inside the search result.
This post breaks down what that shift means for your website's role, why your presence across reviews, comparison pages and third-party sources now matters more than your own site's ranking, and what a Commercial AEO measurement plan should actually track.
Key takeaways
- Semrush and Luke Harsel's data shows a 71% rise in AI Overviews appearing for commercial-intent keywords between November 2025 and April 2026, versus a 5% decline for transactional keywords.
- As AI Overviews expand into commercial search, buyers need fewer clicks across competing vendor pages to compare options, Google increasingly does that comparison work inside the result itself.
- Your website's role shifts from being the primary decision surface to being the seed layer that reviews, comparison pages, Reddit threads and third-party publishers draw from.
- Commercial AEO should track visibility in AI Overviews for commercial-intent queries, mentions in comparison and alternative-style answers, positioning accuracy across third-party sources, and the strength of your review and offsite presence.
- The payoff shows up downstream, in branded search lift, more qualified visits, better demo quality, and stronger pipeline influence, not always in a direct click from the AI Overview itself.
What the new data actually shows
New data from Semrush, alongside analysis from Luke Harsel, points to a clear shift: AI Overviews are expanding into commercial search. Between November 2025 and April 2026, the average change in share of keywords showing an AI Overview rose 71% for commercial-intent keywords. Transactional keywords, by contrast, actually saw a 5% decline over the same period.
That split matters. Transactional queries, where someone already knows exactly what they want to buy, are seeing slightly fewer AI Overviews. Commercial queries, where someone is still comparing options and working out what to buy, are seeing a lot more. Google is putting its AI synthesis effort where the decision-making actually happens.
Why this changes the shape of the buying journey
If AI Overviews keep growing for commercial-intent queries, a prospect won't need to click through five different vendor pages to compare options, understand how categories differ, or evaluate a shortlist. Google, much like the large language models it's converging with, can synthesize a meaningful part of that decision-support process directly inside the search result.
That's a real change in where the comparison work happens. It used to happen across open tabs on a buyer's own browser, tabs you could track with analytics. Increasingly, some of it happens inside the search engine itself, before a buyer ever lands on any vendor's site.
The website's new role: seed layer, not decision surface
This also changes what your website is actually for. It becomes less of the place where the final decision gets made, and more of the seed layer that determines how the broader web describes your brand, through reviews, comparison pages, Reddit threads, YouTube videos, customer stories, and third-party publishers that AI systems draw from when they build a commercial answer.
That's a meaningfully different job than optimizing a single landing page for conversions. It means the strength of your presence off your own domain, not just on it, increasingly decides whether you show up in the comparison an AI Overview presents to a buyer who never visits your site directly. See SEO services →
What Commercial AEO should actually measure
Given that shift, a Commercial AEO measurement plan needs to track a few specific things: visibility in AI Overviews for commercial-intent queries in your category; mentions in comparison and "alternatives to" style answers; how accurately your product positioning is represented across third-party sources you don't control; and the overall strength of your reviews, examples and offsite validation.
The payoff from getting this right tends to show up downstream rather than in a direct click: a lift in branded search, more qualified site visits, better demo quality when prospects do reach out, and a measurable influence on pipeline, even when no single analytics report shows the AI Overview as the source. Influencing that broader source ecosystem is, increasingly, how you influence the buying decision itself.