B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
18%
18% -- click through rate drop for Google AI Overviews informational queries (2026)
A 2026 Semrush study of over 100,000 keywords found that queries displaying AI Overviews experienced an average CTR drop of 18% compared to pre-Overview baselines.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
18%
Unit
Percentage
Data Vintage
2026
Entity
Sample Size
100,000
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Semrush
Primary
Tier C
https://seology.ai/blog/ai-overviews-optimization-guide-2026 ↗
Source Article
How to Rank in Google AI Overviews (2026 Guide)
How to Rank in Google AI Overviews (2026 Guide)
Google AI Overviews (AIOs) are reshaping how answers appear in search results. If your content isn't optimized for them, you're invisible to a growing segment of searchers. Here's what changed and how to rank.
What Are Google AI Overviews?
Google AI Ov…
Original Research
Semrush
· Original study ↗
Methodology
Semrush study of 100,000+ keywords comparing post-Overview CTR to pre-Overview baselines
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Google AI Overviews informational queries: 18% click through rate drop. Source: Semrush (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/semrush-ai-overviews-ctr-drop-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/semrush-ai-overviews-ctr-drop-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>18%</strong> -- click through rate drop for Google AI Overviews informational queries<br><small>Source: Semrush (2026) · <a href="https://lighthousedata.io/data/semrush-ai-overviews-ctr-drop-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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