If that's the case, then why is that, why would OpenAI not want to release their best models when the AI race is still close? I would assume it's due to energy constraints, and if that's true, the opinion that this can't replace people remains valid.
Thermodynamics is the law of laws, unless they invent some kind of ultra-efficient, almost magical computers to run these systems, it's simply not economical yet.
It's not a question of whether it's the case. It's confirmed by OpenAI employees on Twitter.
The reasons could be that it's new (they did say they plan to release eventually but not soon), or that it's too heavily scaffolded for the task and not sufficiently general.
Thermodynamics is the law of laws, unless they invent some kind of ultra-efficient, almost magical computers to run these systems, it's simply not economical yet.