Hey for a long time i was also very sceptical. However i can refer you to this paper to a really cool applciaiton. https://www.youtube.com/watch?v=kP-dXK9JEhY. They baseically use clever GPT-3 prompting to create a dataset, you then train another model on. Besides, you can prompt these models to get (depending on the usecase) really good few shot performance. And finally, github copilot is another pretty neat application.