You upload in the GUI. It's available on free accounts as well, as long as you use GPT 3.5. There's a dropdown. It's super-convenient. I uploaded an AWS study

You upload in the GUI. It's available on free accounts as well, as long as you use GPT 3.5. There's a dropdown. It's super-convenient. I uploaded an AWS study guide, and I'm asking for example questions for my testing. As far as I can see, I can tell no way to determine if it's pulling from the guide, or if it's from GPT's data.