Generative AI floods and dilutes the market for books
Generative AI can produce book-length works of fiction at near-zero cost. These books are often dismissed as low-quality ``slop'' that buyers will ignore, and are assumed to carry little commercial weight. We test that assumption with full-text AI detection across 14,419 self-published genre-fiction books sold on Amazon from 2023 to 2026, matched to daily sales records through June 2026. None of these books disclose whether or not they contain AI-produced content. We find that books for which we
Researchers analyzed 14,419 self-published books on Amazon from 2023 to 2026 and found that books with substantial AI-produced content make up a large share of the catalog. These books win a growing share of sales over time, despite being often dismissed as low-quality. Revenue per selling book fell across most genres as the market added selling books faster than revenue.
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