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I asked ChatGPT to do some napkin math, and it seems like on average it would take a human 13.75 million kcal worth of food, in those 20 years.

That's 58 GWh, but considering each food calorie actually require 5-10 calories of input energy (oil mostly), let's say 290 GWh.

I couldn't find much on training AI models. Apparently GPT-3 used 1.3 GWh for training. So maybe ~10 GWh for newer models?

So... let's stop training humans I guess.

13.75 million kcal is 0.01598 GWh, not 58 GWh. So with the 5x multiplier, that's 0.08 GWh for a human.