The only way is (seemingly) down: A team at UC Berkeley has trained their own O1-preview style model for a mere $450:
Remarkably, Sky-T1-32B-Preview was trained for less than $450, demonstrating that it is possible to replicate high-level reasoning capabilities affordably and efficiently.
We are getting closer and closer to a world where you either just use one of the omnipotent frontier models or simply roll your own.