grok 4 still fails my go-to hard game theory question it thought for almost 10 minutes, summary shows it dancing around the right answer, but it can’t commit to it o3-pro is very close, the math is right, but falls into a hallucination trap — “Stackelberg correlated equilibrium” isn’t a thing the question is hard for LLMs because the concept of correlated equilibrium is very closely related to swap regret in many cases, but here it’s a red herring the answer is just “the Stackelberg value”