Do you mean o1-preview or the current o1? I rarely get anything really useful out of the current one ($20 subscription, not the 200 one). They seem to have seriously nerfed it.
o1 has a parameter that affects how long it's willing to think for, whereas o1-preview did not
It's likely o1-preview was permanently pinned at max thinking, and o1 is not
o1, not a big user, but haven't used a big model before, only Sonnet and GPT4 so this all seems new and wonderful to me