I have a demo I will post soon that runs MNIST in Row Zero, we should be able to handle all of GPT2 without too much trouble, probably a lot faster than Excel, we may have to try it!
I will post it next week! It's very fun to play with. Also a good demo of Row Zero's templating capability — I can make a template so when you click the link, you get your own copy you can mutate and play with.