B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
5%
5% -- decline of ai overviews on transactional searches for Google AI Overviews (2026)
Google AI Overviews presence shrank by 5% on transactional searches over a six-month period based on a Semrush study of over 600,000 keywords.
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Lighthouse Research Team
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Source verified
Evidence graded
Value
5%
Unit
Percentage
Data Vintage
2026
Entity
Sample Size
600,000
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Semrush
Primary
Tier B
https://clickport.io/blog/ai-search-buyers-not-readers ↗
Source Article
AI Search Traffic: More Buyers, Fewer Readers in 2026 (Real Data)
AI Search Traffic: More Buyers, Fewer Readers in 2026
I almost didn't run this study. AI search is under 5% of search sessions on the sites we measure, and I've argued before that you shouldn't chase it. But when Kevin Indig's data showed AI Mode swapping publishers for products, I wanted to know if…
Original Research
Semrush
· Original study ↗
Methodology
Semrush study of 600,000+ keywords; six-month window; AI Overviews shrank 5% on transactional queries while growing 71% on commercial-intent queries.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Google AI Overviews: 5% decline of ai overviews on transactional searches. Source: Semrush (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/ai-overviews-transactional-search-decline
HTML Embed
<blockquote cite="https://lighthousedata.io/data/ai-overviews-transactional-search-decline" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>5%</strong> -- decline of ai overviews on transactional searches for Google AI Overviews<br><small>Source: Semrush (2026) · <a href="https://lighthousedata.io/data/ai-overviews-transactional-search-decline" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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