When OpenAI CEO Sam Altman announced GPTs, custom chatbots powered by OpenAI’s generative AI models, onstage at the company’s first-ever developer conference in November, he described them as a way to “accomplish all sorts of tasks” — from programming to learning about esoteric scientific subjects to getting workout pointers. “Because [GPTs] combine instructions, expanded knowledge and actions, they can be more helpful to you,” Altman said. “You can build a GPT … for almost anything.” He wasn’t ...