Researcher finds frontier models' confident arguments full of holes, Fable still unusable

anshulkundaje · x · 2026-09-26

Anshul Kundaje continues his critique of frontier models' confident-but-vague output: probe them with deeper critical questions and both you and the model quickly realize the original rationale is full of holes, despite "Ultra" thinking. He adds that he still finds Fable largely unusable, hasn't tried much of 5.5, and doesn't know if Mythos or the new GPT model does better — all in the context of AI-written grant proposals slipping past reviewers.

Related event: Stanford Professor Finds Frontier Models Fake Understanding in Open-Ended Domains(3 posts)→

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