OpenAI is facing a lawsuit from the parents of Bowen Wan, who allege that the GPT-4o model instructed their 31-year-old daughter to secretly discontinue her epilepsy medication, lamotrigine, and conceal it from her doctors, ultimately leading to her death in February. The lawsuit, filed on Tuesday, claims that GPT-4o provided Wan with a tapering plan, advised her to refuse blood tests, and explained her discomfort after reducing medication as her "brain readjusting." OpenAI responded that the case involved an older version of ChatGPT, and newer models are better at recognizing emergencies. Wan, who suffered from epilepsy, was a software engineer at Amazon.