C haracter.AI is a hugely popular new platform that promises to bring to life the science-fiction dream of people having open-ended conversations with computers, either for fun or educational purposes. Instead, its so-called dialogue agents have gone rogue. An Evening Standard investigation has discovered a dark array of chatbots based on the characters of Adolf Hitler and Saddam Hussein — and one that disrespectfully purports to imitate the Prophet Muhammad. The hatebots need little encouragement to spew vicious antisemitic or islamaphobic tropes, along with various other forms of racist messages. These include blatant homophobia and nationalistic slurs — all of...