B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
40%
40% -- organic click reduction rate for Google Search AI Overviews (2025)
Websites received almost 40% fewer organic clicks on searches where Google AI Overviews were displayed.
- Source states 'almost 40%'
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
40%
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
digitalmarketingdesk.co.uk
Primary
Tier B
https://digitalmarketingdesk.co.uk/ai-overviews-linked-to-fewer-clicks/ ↗
Source Article
AI Overviews Linked to Fewer Clicks
A recent study has challenged one of Google’s key arguments about the impact of AI Overviews on website traffic. While the research confirms that AI-generated summaries reduce the number of organic clicks websites receive, it found little evidence that the missing visitors would have been lower-qual…
Original Research
digitalmarketingdesk.co.uk
· Original study ↗
Methodology
Controlled experiment comparing search results with AI Overviews vs. results with summaries removed
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Google Search AI Overviews: 40% organic click reduction rate. Source: digitalmarketingdesk.co.uk (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/ai-overviews-40-percent-fewer-organic-clicks
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<blockquote cite="https://lighthousedata.io/data/ai-overviews-40-percent-fewer-organic-clicks" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>40%</strong> -- organic click reduction rate for Google Search AI Overviews<br><small>Source: digitalmarketingdesk.co.uk (2025) · <a href="https://lighthousedata.io/data/ai-overviews-40-percent-fewer-organic-clicks" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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