Penguin Randomhouse titles most commonly featured in AI software. More than 70,000 e-books were used without permission to feed texts to language models for artificial intelligence.

The Authors Guild, America's oldest and largest professional organization for writers, recently adjusted its publishing author contract. An addition now prohibits training the software with these texts. But whether AI companies will adhere to this remains an open question, according to AI and Copyright. In the past, they had also made use of pirated content.