Blog Version: AI Fiction Seizes 27.5% of KDP’s Genre Catalog

For Week Ending  August 6, 2026

This week, Libro.fm adds ebooks across 5,000 indie stores, opening a brand-new sales channel away from Amazon. A $2 million debut novel just collapsed mid-auction over an AI authenticator’s results. HarperCollins reports 15% quarterly growth, and the numbers tell authors exactly where to focus. Fable hits five million users, which could mean a new angle for indie sales channels. And a peer-reviewed study finds AI fiction now controls almost 30% of Amazon’s genre catalog. Find links and sources in the blog version.