If this will work for your use case then it could be a huge discount versus o1. Worth trying again if o1-mini couldn't handle the task before. $4/million output tokens versus $60.
https://platform.openai.com/docs/pricing
I am Tier 5 but I don't believe I have access to it in the API (at least it's not on the limits page and I haven't received an email). It says "rolling out to select Tier 3-5 customers" which means I will have to wait around and just be lucky I guess.