I haven't seen any evidence of over-fitting in the sense of the model getting worse on new examples. Conversely, it seems that we're gradually fitting the model

I haven't seen any evidence of over-fitting in the sense of the model getting worse on new examples. Conversely, it seems that we're gradually fitting the models on more and more types of coding questions, such that it's gradually becoming more and more difficult to find well-defined problems that humans can solve easily but AIs cannot.