B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
0.4%
0.4% -- pdf citation rate for AI search engines (2026)
0.4% of AI search engine responses cite PDF documents.
- Tracked queries lean toward SaaS, e-commerce, and customer support topics rather than the entire web
- Responses counted once if they cite at least one URL ending in .pdf
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
0.4%
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
95
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
AmICited
Primary
Tier A
https://www.amicited.com/da/data-reports/how-often-do-official-pdfs-documents-get-cited-by-chatgpt/ ↗
Source Article
Hvor ofte citerer ChatGPT officielle PDF-dokumenter?
Original Research
AmICited
· Original study ↗
Methodology
Aggregate across AI engines from AmICited tracked queries
Methodology documented
Trend Over Time
| Period | Value | Change |
|---|---|---|
| 2026 (current) | 0.4% | |
| 2026 (current) | 0.4% | 0% |
Segmentation
Industrymarketing
Cite this stat
Plain Text
AI search engines: 0.4% pdf citation rate. Source: AmICited (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/ai-search-pdf-citation-rate-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/ai-search-pdf-citation-rate-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>0.4%</strong> -- pdf citation rate for AI search engines<br><small>Source: AmICited (2026) · <a href="https://lighthousedata.io/data/ai-search-pdf-citation-rate-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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