AI companies aren't just bombarding social media feeds with 'slop'; they're now making platforms of their own. One leader in this new frontier is Character.AI, a companionship platform where users build and interact with millions of AI characters, ranging from historic figures like Egyptian Pharaohs and Vladimir Putin to bots posing as HR managers, therapists, and toxic girlfriends. Founded in 2021 by a pair of Google engineers and backed by a list of superstar investors, the San Francisco company has rapidly grown in popularity. This "multi-modal world" has come a long way since its origins as a 1:1 text chat,...