B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
25.1%
25.1% -- dead or unreachable cited url rate for ChatGPT (2026)
According to a 2026 Otterly.ai study analyzing over 20 million cited URLs across seven AI engines, 25.1% of AI-cited URLs on ChatGPT were dead or unreachable.
- Descriptive snapshot study, not longitudinal
- Vendor-reported data from Otterly.ai without independent audit
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
25.1%
Unit
Percentage
Data Vintage
2026
Entity
Sample Size
20,000,000
Geography
North America
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
Otterly.ai
Primary
Tier C
https://artlogic.ca/geo/resources ↗
Source Article
GEO Resource Library: Sources, Studies and Paths
Original Research
Otterly.ai
· Original study ↗
Methodology
From Otterly.ai dead-citations study; vendor-reported
Methodology documented
Segmentation
Industrymarketing
RegionNorth America
RoleAll marketers
Channelmulti-channel
Cite this stat
Plain Text
ChatGPT: 25.1% dead or unreachable cited url rate. Source: Otterly.ai (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/dead-ai-citations-chatgpt-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/dead-ai-citations-chatgpt-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>25.1%</strong> -- dead or unreachable cited url rate for ChatGPT<br><small>Source: Otterly.ai (2026) · <a href="https://lighthousedata.io/data/dead-ai-citations-chatgpt-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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