MAI-DxO works with different underlying language models, achieving its highest diagnostic performance using OpenAI's GPT-5 and GPT-5.5.

From the articleMicrosoft AI beats generalist doctors in simulated complex cases, Suleyman says | МежаAlso in Microsoft Says Its New AI Is More Than Twice as Good at Diagnosing Diseases as Doctors, Microsoft AI tool beat generalist doctors at step-by-step diagnosis, Microsoft’s Mustafa Suleyman says its AI outperforms doctors on hard cases as he chases ‘medical superintelligence’