A chatbot based on Google’s large language model can take medical histories from simulated patients and offer a range of diagnoses.Credit: Tero Vesalainen/Getty An artificial intelligence (AI) system trained to conduct medical interviews matched, or even surpassed, human doctors’ performance at conversing with simulated patients and listing possible diagnoses on the basis of the patients’ medical history1.The chatbot, which is based on a large language model (LLM) developed by Google, was more a...