The tech giant says its powerful new AI tool can diagnose disease four times more accurately and at significantly less cost than a panel of human physicians. The company could also develop tools to help medical experts improve or even automate patient care. The project is the latest in a growing body of research showing how AI models can diagnose disease. Microsoft describes the way that it combined several frontier AI models as “a path to medical superintelligence” in a blog post about the project today. The project also suggests that AI could help lower health care costs, a critical issue, particularly in the US.