AI-generated stories are no longer a niche experiment in publishing. A 2026 research paper analyzing more than 14,000 self-published genre-fiction ebooks found that titles with substantial detected AI text (over ~25% of the book) make up a large share of the catalog and a growing share of sales and bestseller slots.
Key takeaways from the coverage
- Roughly ~20% of sampled self-published fiction ebooks showed substantial AI text
- About ~33% of new bestseller entrants contained detected AI content
- Book volume grew far faster than revenue — more titles competing for the same attention
- Some AI-heavy titles still hit real commercial scale (six-figure sales reported in secondary coverage)
Sources: arXiv paper · OnMSFT · Wccftech
What fans should watch for
Disclosure is still uneven. The healthier pattern for AI entertainment is the opposite of stealth publishing: label the experience as AI, then compete on persona, visuals, and exclusives. That’s the model OnlyAIFans uses for AI girlfriends and adult AI companions.