Yeah, my feeling here was that it's sort of tautological: if GPT predicts "a", then it must then predict a word that would follow "a" and not require "an" (and vice versa). And if you think about it from the opposite direction: if it's working out a response that is eventually going to have "apple" in it, then all the data it's trained on is going to cause it to predict "an" even before it needs to predict "apple".
(Admittedly, all this ML/AI stuff is still beyond my current level of understanding, so I'm sure my thinking here is off.)
(Admittedly, all this ML/AI stuff is still beyond my current level of understanding, so I'm sure my thinking here is off.)