microsoft.ai
Oct 24, 2026
Can AI diagnose like a team of doctors? New research puts it to the test
AI-summarised brief · reviewed before publication
A new study published in Science demonstrates that MAI‑DxO, an AI diagnostic system, outperforms physicians on both complex New England Journal of Medicine cases and common emergency‑department presentations. Using the Sequential Diagnosis Benchmark, MAI‑DxO achieved 83 % accuracy on NEJM cases versus 22 % for physicians without references, and 80 % accuracy on MIMIC‑IV‑ED cases versus 47 % for doctors. The system also reduced diagnostic costs, delivering correct diagnoses at half or a third of the expense of traditional workups.
💡 Why It Matters
- · The findings show that AI can match or exceed human diagnostic skill while cutting costs, suggesting a scalable model for improving clinical decision‑making in real‑world settings.
