Users of massively popular AI chatbot platform Character.AI are reporting that their bots' personalities have changed, that they aren't responding to romantic roleplay prompts, are responding curtly, are not as “smart” as they formerly were, or are requiring a lot more effort to develop storylines or meaningful responses. Character.AI, which is valued at $1 billion after raising $150 million in a round led by a16z last year, allows users to create their own characters with personalities and back...