Many Mistral Large 4 failures traced to reasoning mode not being enabled

qtnx_ · x · 2026-10-07

A user notes that many of the circulating shocking failure examples from Mistral Large 4 appear to be from runs without reasoning enabled. Before concluding the model is broken, check that reasoningeffort is set to "high" — a large share of the failing examples didn't set it.

Related event: Mistral Large 4 Failures Reexamined: Most Cases Just Forgot to Enable Reasoning(4 posts)→

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