The underlying model might be as good, but how you interface with it seems to deliver wildly different results. I can easily get chat-gpt to give me entire blocks of code. Copilot just trickles out small bits. Copilot is also very distracting because I find myself constantly waiting to see if what it's going to do next is helpful or not, whereas just typing into chat gpt I know I'm going to get something in the direction of what I want.
For me it is very different use cases. Copilot often prevents me from needing to write mundane blocks of code, as it will often fill in what I'm looking for after I write the function name.
If I'm still unsure how I might approach a certain problem, or if it isn't immediately clear to me how I'd write the function I want, I might type in a prompt to ChatGPT and see what it comes up with. But it would really slow down my workflow if I had to prompt ChatGPT for every mundane function I plan to write.
