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Microsoft’s MAI-DxO Hits 83% Diagnostic Accuracy in Tests

By Drooid · Oct 23, 2026, 2:12 AM UTC · How we work

Summary

Story summary

Microsoft’s AI diagnostic system MAI-DxO achieved 83% accuracy, far exceeding 36% for generalist physicians.
In emergency department simulations, MAI-DxO reached 80% accuracy versus 47% for human physicians.
The AI cut estimated case cost by about $3,000, lowering GPT-5’s $8,400 per-case expense.
Microsoft will open-source SDBench and begin real-world testing at Beth Israel Deaconess Medical Center, comparing DxO’s recommendations with standard care.

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Story summary

Microsoft’s AI diagnostic system MAI-DxO achieved 83% accuracy, far exceeding 36% for generalist physicians.
In emergency department simulations, MAI-DxO reached 80% accuracy versus 47% for human physicians.
The AI cut estimated case cost by about $3,000, lowering GPT-5’s $8,400 per-case expense.
Microsoft will open-source SDBench and begin real-world testing at Beth Israel Deaconess Medical Center, comparing DxO’s recommendations with standard care.