OpenAI CEO Sam Altman said Tuesday the company is “rolling back” the latest update to the default AI model powering ChatGPT, GPT-4o, after complaints about strange behavior, in particular extreme sycophancy. “[W]e started rolling back the latest update to GPT-4o last night,” Altman wrote in a post on X. “[I]t’s now 100% rolled back for free [ChatGPT] users and we’ll update again when it’s finished for paid users, hopefully later today. [W]e’re working on additional fixes to model personality and...