The prediction wasn't the existence of the product, but what was feeding into the content of the product (WebMD doesn't exist spontaneously).

Also relevant:

> Six patients 65 years or older (2 women and 4 men) were included in the analysis. The accuracy of the primary diagnoses made by GPT-4, clinicians, and Isabel DDx Companion was 4 of 6 patients (66.7%), 2 of 6 patients (33.3%), and 0 patients, respectively. If including differential diagnoses, the accuracy was 5 of 6 (83.3%) for GPT-4, 3 of 6 (50.0%) for clinicians, and 2 of 6 (33.3%) for Isabel DDx Companion (Table).

- Use of GPT-4 to Analyze Medical Records of Patients With Extensive Investigations and Delayed Diagnosis (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10425828/)