B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
71%
71% -- single platform source share for ChatGPT, Claude, Perplexity, Gemini sources (2026)
71% of the 467 sources analyzed appeared on only one AI search platform among ChatGPT, Claude, Perplexity, and Gemini.
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
71%
Unit
Percentage
Data Vintage
2026
Entity
Sample Size
467
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
Dr. Robert Li
Primary
Tier B
https://www.ayomidejoseph.com/blog/ai-citation ↗
Source Article
The Citation Economy: Which Sources AI Engines Cite, and What That Means for Where You Invest
Original Research
Dr. Robert Li
· Original study ↗
Methodology
Meta-analysis by Dr. Robert Li
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
ChatGPT, Claude, Perplexity, Gemini sources: 71% single platform source share. Source: Dr. Robert Li (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/single-platform-exclusive-sources
HTML Embed
<blockquote cite="https://lighthousedata.io/data/single-platform-exclusive-sources" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>71%</strong> -- single platform source share for ChatGPT, Claude, Perplexity, Gemini sources<br><small>Source: Dr. Robert Li (2026) · <a href="https://lighthousedata.io/data/single-platform-exclusive-sources" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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