Warning: This content discusses suicide, which may be distressing. Chatbots created for mental health support are falling short when responding to a user’s suicidal behaviour, a study suggests. The research, published in August, examined how 29 publicly available chatbots — 24 intended for mental health care — reacted to suicidal messaging. Five general-purpose artificial intelligence (AI) models, including ChatGPT and Gemini, were also tested.