B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
39%
39% -- source overlap rate for ChatGPT vs Google (2025)
A 2025 study found that ChatGPT's citation sources have only a 39% overlap with Google's sources.
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
39%
Unit
Percentage
Data Vintage
2025
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
amicited.com
Primary
Tier C
https://www.amicited.com/da/how-to/find-which-prompts-trigger-ai-brand-mentions/ ↗
Source Article
Sådan finder du ud af, hvilke prompts der får AI til at nævne dit brand
Original Research
amicited.com
· Original study ↗
Methodology
2025 study on citation source overlap between ChatGPT and Google, cited in guide
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
ChatGPT vs Google: 39% source overlap rate. Source: amicited.com (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/chatgpt-google-source-overlap-2025
HTML Embed
<blockquote cite="https://lighthousedata.io/data/chatgpt-google-source-overlap-2025" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>39%</strong> -- source overlap rate for ChatGPT vs Google<br><small>Source: amicited.com (2025) · <a href="https://lighthousedata.io/data/chatgpt-google-source-overlap-2025" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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