I'm trying to figure out how much better GPT-4.5 will be compared to GPT-3.5.
Then, the deep learning model architecture and the hardware (GPUs).
> I'm trying to figure out how much better GPT-4.5 will be compared to GPT-3.5
It is not possible to give a ratio with certainty. Since it will be trained on more data and probably on better hardware, all we can say is that it will be better.