I'm working on a hard problem recently and have been keeping my "model" setting pegged to "high".

Why in the world, if I'm paying the loss leader price for "unlimited" usage of these models, would any of these companies literally respect my preference to have unfettered access to the most expensive inference?

Especially when one of the hallmark features of GPT-5 was a fancy router system that decides automatically when to use more/less inference resources, I'm very wary of those `/model` settings.