AI Books Impact Amazon Sales for Human Authors
TL;DR. A new study reveals AI-generated books make up 20% of Amazon's self-published catalog, diluting human authors' revenue across multiple genres. - AI-written books account for 12.1% of sales and 11.3% of revenue in the analyzed catalog. - Revenue per book for human-written titles fell in seven of eight genres since 2023. - The market now faces 38.3x more titles while revenue grew only 8.9x in the same period.
- AI-generated books constitute 20% of Amazon's self-published catalog but only 12% of sales.
- A study using the Pangram v3.3 detector analyzed over 14,000 self-published ebooks.
- Revenue per book declined for human-written titles in seven of eight genres between 2023 and 2025.
- The market's cumulative catalog grew 38.3x, while quarterly revenue increased only 8.9x.