Microsoft’s Mustafa Suleyman says its AI outperforms doctors on hard cases as he chases ‘medical superintelligence’
Microsoft's AI system MAI-DxO diagnosed complex medical cases 83% correctly, more than twice as often as generalist physicians, in a new study.Summary
A study published in Science found that Microsoft's AI diagnostic system, MAI-DxO, correctly diagnosed complex medical cases 83% of the time in a simulation, compared to 36% for primary care doctors and general internists working individually. MAI-DxO coordinates multiple AI agents that act as a panel of doctors, questioning patients, ordering tests, and debating diagnoses. Mustafa Suleyman, CEO of Microsoft AI, called the result a step toward "medical superintelligence." Microsoft tested the system with models from OpenAI, Google, Anthropic, Meta, and DeepSeek, finding the best results with OpenAI's GPT-5 and GPT-5.5. The study shows that much of the improvement comes from more powerful underlying AI models, with the orchestration system adding gains on top. Microsoft is partnering with Mayo Clinic to train a healthcare foundation model for release next year, and with Beth Israel Deaconess Medical Center to evaluate DxO's clinical reasoning across different hospital settings. Suleyman believes that in 2027 there will be a coding-style breakthrough for medical records, enabling highly accurate predictions of how a medical record might unfold.
(Source：TechCrunch)