B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
90.8%
90.8% -- ai answer citation rate for AI search engines (ChatGPT, Perplexity, Gemini, Claude, Copilot) (2026-07)
In Arcalea's July 2026 AEO Index, 90.8% of AI answers carried at least one citation.
- Based on 50 to 64 entity-neutral prompts run across five AI engines (ChatGPT, Perplexity, Gemini, Claude, and Copilot)
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
90.8%
Unit
Percentage
Data Vintage
2026-07
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
95
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Arcalea
Primary
Tier A
https://arcalea.com/aeo-vs-seo-vs-geo ↗
Source Article
AEO vs SEO vs GEO: The Difference and How They Layer
Original Research
Arcalea
· Original study ↗
Methodology
Arcalea AEO Index: 50-64 entity-neutral prompts run across five AI engines, responses parsed for citations
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
AI search engines (ChatGPT, Perplexity, Gemini, Claude, Copilot): 90.8% ai answer citation rate. Source: Arcalea (2026-07). Via Lighthouse Intelligence -- https://lighthousedata.io/data/ai-answers-citation-rate-july-2026
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<blockquote cite="https://lighthousedata.io/data/ai-answers-citation-rate-july-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>90.8%</strong> -- ai answer citation rate for AI search engines (ChatGPT, Perplexity, Gemini, Claude, Copilot)<br><small>Source: Arcalea (2026-07) · <a href="https://lighthousedata.io/data/ai-answers-citation-rate-july-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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