Researchers sampled 14,419 ebooks and matched them to three years of sales data
TuhinChakr · x · 2026-07-28
- The study randomly sampled 14,419 self-published genre-fiction ebooks, then used Pangram to classify each full text into substantial AI (>25%), light AI (<25%), or no AI (0%).
- Each book was matched against a proprietary daily sales feed from a Big Five publisher, giving the researchers book-level AI-content and sales trajectories for three years.
- The authors frame the paper as evidence for a live copyright question: whether AI outputs compete with the works the models were trained on.
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