B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
11%
11% -- domain citation overlap for ChatGPT (2026)
Only 11% of domains cited by ChatGPT are also cited by Perplexity.
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
11%
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
Lafferty (nicklafferty.com)
Primary
Tier B
https://turboaudit.ai/perplexity-monitoring ↗
Source Article
Perplexity SEO: 2026 Cornerstone Guide (Ranking Factors, Playbook, Monitoring) | TurboAudit
Perplexity SEO: The 2026 Cornerstone Guide (Ranking Factors, Playbook, Monitoring)
Perplexity SEO is the practice of structuring content so Perplexity AI cites it in generated answers. Perplexity cites 8.2 unique sources per answer (MarGen 2026) with high semantic-relevance and freshness weighting. …
Original Research
Lafferty (nicklafferty.com)
· Original study ↗
Methodology
Lafferty 2026 cross-engine citation asymmetry analysis
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
ChatGPT: 11% domain citation overlap. Source: Lafferty (nicklafferty.com) (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/chatgpt-perplexity-domain-overlap-11
HTML Embed
<blockquote cite="https://lighthousedata.io/data/chatgpt-perplexity-domain-overlap-11" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>11%</strong> -- domain citation overlap for ChatGPT<br><small>Source: Lafferty (nicklafferty.com) (2026) · <a href="https://lighthousedata.io/data/chatgpt-perplexity-domain-overlap-11" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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