Semrush 發現美國桌面搜尋中 88% 商業關鍵字出現 AI Overviews

Google AI Overviews are now present across most commercial searches tracked by Semrush. In its fixed US desktop panel of 400 commercial keywords, the SEO platform found that AI Overviews appeared on 88% of keywords by August 2026, up from 45.75% in September 2025. For businesses competing on product, pricing, comparison, and review searches, the result points to a more prominent AI-generated layer above traditional organic results.

The finding comes from Semrush's commercial AI Overviews study, which tracked fixed keywords across banking, software, and ecommerce. When Semrush weighted the panel by search volume, AI Overviews appeared on 97.08% of estimated commercial searches in August 2026. That distinction matters: high-volume commercial queries in the study were even more likely than the average tracked term to show an AI-generated summary.

What Semrush's data shows

Semrush tracked the same 400 commercial keywords from September 2025 through August 2026. Its keyword-weighted figure measures the share of tracked keywords displaying an AI Overview. Its search-volume-weighted figure estimates the share of searches represented by keywords that display one. Neither measure is a direct measure of clicks, conversions, advertising performance, or revenue.

The study is especially notable because the affected query types are close to purchase decisions. Searches for alternatives, comparative products, prices, costs, reviews, and competing brands often shape a buyer's shortlist. An AI Overview can summarize those choices before a person reaches the conventional organic listings.

Semrush also reported a parallel six-month analysis covering more than 600,000 keywords across 10 industries. That update found 71% average growth in commercial-intent AI Overviews, supporting the view that the pattern extends beyond the original 400-keyword panel. Search Engine Land separately highlighted the 88% August result.

Commercial search is becoming a source-quality problem

For website owners, the immediate issue is not simply whether an AI Overview appears. The more practical question is whether the information it draws on presents the company, its offering, prices, comparisons, and reviews accurately.

AI-generated summaries make clear, maintained source material more important. A business with outdated pricing guidance, thin comparison pages, ambiguous product descriptions, or neglected review references gives search systems less reliable material to interpret. Conversely, comprehensive pages that directly answer buyer questions can better support accurate brand representation where those pages are cited or otherwise reflected in AI-generated results.

This does not make a particular page's inclusion in an AI Overview predictable. Semrush's findings demonstrate coverage, not a guaranteed method for being cited. They do, however, show that commercial search visibility increasingly depends on more than the position of a blue link.

How businesses can adapt their content and measurement

The strongest response is to treat high-intent search pages as business assets that need regular review. Start with the pages that address the same commercial intents in Semrush's panel, especially where prospects compare options or seek price and review information.

Useful priorities include:

• Refresh comparison content when products, features, positioning, or alternatives change.
• Check pricing and cost explanations for accuracy, context, and clear update dates where appropriate.
• Audit review and brand references so customers can find current, factual information about the business.
• Make buyer-oriented answers explicit, rather than leaving key distinctions buried in general marketing copy.
• Track visibility separately from outcomes, monitoring AI Overview presence alongside organic traffic, qualified leads, and conversions where measurement is available.

The final point is important for budget planning. The 88% figure should not be interpreted as proof that every commercial keyword has the same value or that every AI Overview creates the same commercial impact. Businesses should prioritize terms connected to real buying journeys, then compare any visibility changes with their own lead and revenue indicators. A broader content project is easier to justify when it is connected to pages and queries that matter to customer acquisition.

For businesses whose growth depends on being understood in AI-assisted search, improving AI search visibility for commercial buyer queries can help identify inaccurate brand signals, weak comparison content, and missed opportunities before they affect demand capture. GEO Search Leads focuses that work on the pages and topics most likely to influence how prospective customers encounter a company during research. Start an AI visibility assessment to prioritize the highest-value fixes.

What to watch next

Semrush's research establishes a sharp increase in AI Overview coverage within its commercial keyword panel through August 2026. The next question for marketers is how coverage evolves by industry, query type, and search volume, and how reliably businesses can connect AI Overview visibility to meaningful outcomes.

For now, the durable takeaway is straightforward: commercial content should be accurate, specific, and maintained for the questions buyers actually ask. The pages built for comparisons, costs, reviews, and alternatives deserve particular attention because those are the query patterns where Semrush found consistently high AI Overview coverage.

Frequently Asked Questions

What did Semrush find about AI Overviews and commercial keywords?

Semrush found AI Overviews on 88% of 400 fixed commercial keywords in its US desktop panel by August 2026. The figure was 45.75% in September 2025.

Which commercial searches had high AI Overview coverage?

The study tracked Alternatives, Best X for Y, Price/Cost, Reviews, and Brand vs Brand modifiers. All ended August 2026 at roughly 82% to 96% coverage, and several combinations reached 100%.

What does the 97.08% figure mean?

It is Semrush's search-volume-weighted estimate of commercial searches represented by keywords that displayed an AI Overview in August 2026. It is not a click-through or conversion metric.

How should businesses respond to more AI Overviews?

Businesses can review high-intent comparison, pricing, review, and alternative pages for accuracy and clarity, then monitor visibility alongside their own lead and conversion measures.

Conclusion

Semrush's data shows that AI Overviews have become a common feature of the commercial US desktop searches in its panel. With coverage highest across buyer-focused query types, maintaining accurate comparison, price, review, and brand information is becoming a central part of search visibility work.