Microsoft’s Mustafa Suleyman says its AI outperforms doctors on hard cases as he chases ‘medical superintelligence’

Key Points:

• Microsoft’s AI diagnostic system, MAI-DxO, correctly diagnosed complex medical cases 83% of the time in simulations, more than twice the accuracy of generalist physicians at 36%, according to a study published in Science.
• MAI-DxO uses multiple AI agents to simulate a panel of doctors, improving diagnostic accuracy and reducing costs, especially when paired with OpenAI’s GPT-5 and GPT-5.5 models, although gains were less significant in emergency cases.
• Microsoft plans to collaborate with the Mayo Clinic to develop a foundational healthcare AI model by next year, aiming to revolutionize medical record predictions and clinical decision support by 2027.
• The company is launching real-world evaluations of DxO’s clinical reasoning capabilities through a partnership with Beth Israel Deaconess Medical Center, comparing AI recommendations against human doctors in diverse hospital settings.
• Microsoft envisions building “medical superintelligence” that surpasses current human-led health systems, focusing on integrating AI with clinicians and healthcare infrastructure for improved patient outcomes and positioning itself as a leader in medical AI technology.