B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
18%
18% -- year over year keyword overlap rate for Google AI Overviews (2025)
The year-over-year overlap rate of AI Overview keywords is 18%.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
18%
Unit
Percentage
Data Vintage
2025
Entity
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
BrightEdge
Primary
Tier B
https://digitalmarketingdesk.co.uk/ai-overviews-shift-shopping-rankings/ ↗
Source Article
AI Overviews Shift Shopping Rankings
BrightEdge’s latest findings suggest that Google’s AI Overviews are taking on a major role in shopping-related searches, particularly from November through early December. The research highlights that AI is now playing a crucial part in the stages of product research and comparison, marking a signif…
Original Research
BrightEdge
· Original study ↗
Methodology
BrightEdge analysis of AI Overview keyword overlap vs prior year
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Google AI Overviews: 18% year over year keyword overlap rate. Source: BrightEdge (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/ai-overview-keyword-yoy-overlap-18pct
HTML Embed
<blockquote cite="https://lighthousedata.io/data/ai-overview-keyword-yoy-overlap-18pct" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>18%</strong> -- year over year keyword overlap rate for Google AI Overviews<br><small>Source: BrightEdge (2025) · <a href="https://lighthousedata.io/data/ai-overview-keyword-yoy-overlap-18pct" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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