I have never had o3-pro take longer than 6-8 minutes. How are you getting it to think for 20 minutes?! My results using it have also been great, but I never use

I have never had o3-pro take longer than 6-8 minutes. How are you getting it to think for 20 minutes?! My results using it have also been great, but I never used o1-pro so I don't have that as a reference point.