A Harvard study found that an AI system, OpenAI's o1, outperformed human doctors in diagnosing patients in emergency room settings, with a 67% accuracy rate compared to 50-55% for human doctors. The AI system was given the same electronic health records as the human doctors and was able to identify the exact or very close diagnosis more often. The study's authors note that the AI system is not meant to replace doctors, but rather to assist them in making diagnoses. The AI system's advantage was particularly pronounced in triage circumstances requiring rapid decisions with minimal information.