B Evidence Grade B Graded accuracy verified by the review judge Safe to Cite Recent

40%

40% -- semantic similarity rate for generative AI-produced content across five industries (2025)

2025  · Oxford Internet Institute

A 2025 study by the Oxford Internet Institute found that content produced by generative AI tools across five industries shared over 40% semantic similarity.

  • The similarity was measured as 'over 40%' rather than an exact 40%
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Attribution: Oxford Internet Institute View source
Lighthouse Research Team
Last verified:  ·  How we verify data →
Source verified Evidence graded
Value
40%
Unit
Percentage
Data Vintage
2025
Entity
generative AI-produced content across five industries
B
Strong, reliable evidence

Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.

61/100 confidence

Single source - not yet corroborated

Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Oxford Internet Institute Primary Tier B
https://ancglobalhr.com/is-ai-killing-creativity-in-your-employees/ ↗
Confidence: 53/100 Vintage: 2025 Channel: Common Crawl
Source Article
Is AI Killing Creativity in your employees?
Original Research
Oxford Internet Institute · Original study ↗

Study by Oxford Internet Institute on AI content conformity.

Methodology documented
Industrymarketing
Plain Text
generative AI-produced content across five industries: 40% semantic similarity rate. Source: Oxford Internet Institute (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/ai-content-semantic-similarity-oxford-2025
HTML Embed
<blockquote cite="https://lighthousedata.io/data/ai-content-semantic-similarity-oxford-2025" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>40%</strong> -- semantic similarity rate for generative AI-produced content across five industries<br><small>Source: Oxford Internet Institute (2025) · <a href="https://lighthousedata.io/data/ai-content-semantic-similarity-oxford-2025" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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