I seem to have no way to truly use gpt3.5 turbo, its performance is completely consistent with cursor small

Discussion
1

I seem to have no way to truly use gpt3.5 turbo, its performance is completely consistent with cursor small.
image
It seems that they are two different models, but in fact they behave almost the same. Before I upgraded to Pro, the performance of GPT-3.5 seemed acceptable, but after the upgrade, GPT-3.5 became almost unusable. GPT-4 is too slow. Can’t stand it.

What are the differences between GPT-3.5 Turbo and Cursor Small? When I manually added “GPT-3.5 Turbo 1106,” the system prompted that I don’t have permission to use it. How can I use the real GPT-3.5?

2

image
In my model selection area, GPT-3.5 Turbo is only displayed as GPT-3.5, and I’m not sure if this is an error. I also don’t know the difference between Cursor-Fast and Cursor-Small. Previously, Cursor-Fast was available, but now it needs to be manually added to be used.