AI-generated books are flooding the self-publishing market, with nearly 20% of novels now substantially written by AI in 2024-2025.

Self-published books surged 40% year-over-year in 2025, jumping from 2.5 million to 3.5 million titles

AI detection tools flagged a 41% year-over-year increase in novels containing large amounts of AI-generated text between 2024 and 2025

Researcher Chakrabarty's random sample analysis found that approximately 20% of novels examined were substantially written by AI

The trend reveals a significant shift in publishing, with AI becoming a major tool for rapid book production in the self-publishing sector