This doesn't feel like GPT-5, the training data cutoff is Oct 2023 which is the same as the other GPT-4 models and it doesn't seem particularly "larger" as much

This doesn't feel like GPT-5, the training data cutoff is Oct 2023 which is the same as the other GPT-4 models and it doesn't seem particularly "larger" as much as "runs differently". Of course it's all speculation one way or the other.