B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
31%
31% -- retrieval accuracy drop for AI answer engines (content chunking) (2026)
GEO-SFE (2026) measured a 31% retrieval-accuracy drop on content chunks over 300 words.
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Lighthouse Research Team
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Source verified
Evidence graded
Value
31%
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
GEO-SFE
Primary
Tier C
https://www.theanswerengine.ai/blog/what-is-an-ai-entity-score-and-why-it-controls-your-visibility ↗
Source Article
AI Entity Score | The Answer Engine
An AI entity score is the internal confidence value an answer engine assigns to a business before it decides whether that business is safe to recommend. The score is not a ranking position and it is not a keyword match. It is a probability estimate: how certain the retrieval system is that the busin…
Original Research
GEO-SFE
· Original study ↗
Methodology
GEO-SFE (2026) study, as cited by the blog
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
AI answer engines (content chunking): 31% retrieval accuracy drop. Source: GEO-SFE (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/retrieval-accuracy-drop-long-chunks
HTML Embed
<blockquote cite="https://lighthousedata.io/data/retrieval-accuracy-drop-long-chunks" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>31%</strong> -- retrieval accuracy drop for AI answer engines (content chunking)<br><small>Source: GEO-SFE (2026) · <a href="https://lighthousedata.io/data/retrieval-accuracy-drop-long-chunks" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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