B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
74%
74% -- share of reviews awarded five stars for Amazon AI-written reviews (2026)
74% of AI-written Amazon reviews in Pangram's sample awarded five stars.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
74%
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
Pangram Labs
Primary
Tier B
https://www.antoinebuteau.com/lessons-from-max-spero/ ↗
Source Article
Lessons from Max Spero
Original Research
Pangram Labs
· Original study ↗
Methodology
Pangram AI-generated Amazon reviews study; human reviews baseline 59%
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Amazon AI-written reviews: 74% share of reviews awarded five stars. Source: Pangram Labs (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/ai-reviews-five-star-rate
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<blockquote cite="https://lighthousedata.io/data/ai-reviews-five-star-rate" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>74%</strong> -- share of reviews awarded five stars for Amazon AI-written reviews<br><small>Source: Pangram Labs (2026) · <a href="https://lighthousedata.io/data/ai-reviews-five-star-rate" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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