B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
57%
57% -- citation probability lift for AI answer engine retrievers (2026)
Content opening with a clear, bounded definition of its subject achieves a 57% higher citation probability compared to content with mid-article definitions.
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
57%
Unit
Percentage
Data Vintage
2026
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
Zhang et al.
Primary
Tier B
https://www.theanswerengine.ai/blog/what-is-aeo-2026 ↗
Source Article
What Is AEO? Answer Engine Optimization 2026
The Origin Window: Answer Engine Optimization is younger than 24 months as an academic field, which means the operators who install citation authority now compound for years before late entrants understand the rules (Aggarwal et al., KDD 2024; GEO-SFE, 2026). The implication is direct: AEO is a disc…
Original Research
Zhang et al.
· Original study ↗
Methodology
Academic study (Zhang et al., 2026) on definitional content extraction position
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
AI answer engine retrievers: 57% citation probability lift. Source: Zhang et al. (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/definition-premium-57
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<blockquote cite="https://lighthousedata.io/data/definition-premium-57" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>57%</strong> -- citation probability lift for AI answer engine retrievers<br><small>Source: Zhang et al. (2026) · <a href="https://lighthousedata.io/data/definition-premium-57" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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