GPT-4o aces 95 percent of test cases but stumbles with real patients
The model pinpoints the right condition in 94.9 percent of controlled scenarios. But once actual people use it to figure out what to do about their health, correct action rates fall below 44.2 percent, no better than a standard Google search or NHS fact sheets. The issue is not the model, it is the human conversation around it.
practitioners › Nature Medicine study (s41591-025-04074-y), 1,298 participants, GPT-4o, reported by Reuters on February 9, 2026.
www.nature.com →