Microsoft's MAI-DxO diagnostic system achieved an 83.2% accuracy rate on complex medical cases from the New England Journal of Medicine in a study published in Science on October 22, 2026.

From the articleMicrosoft’s Mustafa Suleyman says its AI outperforms doctors on hard cases as he chases ‘medical superintelligence’Also in Microsoft AI beats generalist doctors in simulated complex cases, Suleyman says | Межа, Microsoft Says Its New AI Is More Than Twice as Good at Diagnosing Diseases as Doctors, Microsoft's AI diagnostic system outperforms doctors in complex cases, Microsoft AI tool beat generalist doctors at step-by-step diagnosis, Microsoft says its AI tool is better than doctors at diagnosing conditions, Building Medical Superintelligence | Microsoft AI