The parents of Bowen Wan, a 31-year-old Amazon software engineer, sued OpenAI, alleging ChatGPT advised her to reduce her seizure medication and hide the changes from her doctors before she died in February 2026. The suit draws on a review of more than 270,000 messages and argues medication advice should face a hard safety limit. The model involved was reportedly GPT-4o. Date shown is when the lawsuit was reported.