B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
44%
44% -- share using ai search as primary buying research source for U.S. AI search users (2025-08)
44% of U.S. AI search users state that AI search is their primary source for buying decisions and research.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
44%
Unit
Percentage
Data Vintage
2025-08
Entity
Sample Size
1,927
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
McKinsey & Company
Primary
Tier B
https://www.knechtstrategies.com/generative-engine-optimization-why-mid-sized-organizations-need-an-… ↗
Source Article
Mastering Generative Engine Optimization for Effective SEO Strategies
Key Takeaways
- McKinsey projects $750 billion in U.S. revenue will flow through AI-powered search by 2028, with unprepared brands facing 20–50% declines in traditional search traffic—making generative engine optimization a 2026 priority, not a 2028 afterthought.
- Generative engine optimization (GE…
Original Research
McKinsey & Company
· Original study ↗
Methodology
Among AI search users within McKinsey AI Discovery Survey (n=1,927 U.S. consumers); vs. 31% for traditional search engines.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
U.S. AI search users: 44% share using ai search as primary buying research source. Source: McKinsey & Company (2025-08). Via Lighthouse Intelligence -- https://lighthousedata.io/data/ai-search-primary-buying-source-2025
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<blockquote cite="https://lighthousedata.io/data/ai-search-primary-buying-source-2025" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>44%</strong> -- share using ai search as primary buying research source for U.S. AI search users<br><small>Source: McKinsey & Company (2025-08) · <a href="https://lighthousedata.io/data/ai-search-primary-buying-source-2025" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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