Cursor got 3.5 and cursor small gone

Hi, I’m using cursor IDE, at the beginning I got GpT 4, 3.5, cursor fast, small. But now I don’t see those options anymore, suddenly it got disappear and I can’t chat with my code. Can anyone tell me how to fix this. Not sure what else to do? Thanks.

Hey! Do you have an api key enabled? What do you see in the model dropdown next to chat?

In my case cursor-fast is missing. What is the difference between cursor-small and cursor-fast? Are they both unlimited use as part of the subscription?