Neural network ChatGPT almost passed the mandatory medical exam, shows the research, published in the prestigious peer-reviewed scientific journal PLOS Digital Health. AI neural network ChatGPT has almost passed the USMLE medical licensing exam used to test the knowledge and skills of physicians and medical students in the United States. It is considered to be an extraordinarily difficult test, usually requiring up to 400 hours of preparation. The research was published in the prestigious peer-reviewed scientific journal PLOS Digital Health.The researchers indicated that ChatGPT passed the medical exam without specialized training. This means that the neural network was not trained on special medical papers, but simply used the information available on the internet.