Do reasoning models all use Monte Carlo tree search?
No. Inference-time strategies include longer generated reasoning, repeated samples, revision, selection and explicit search. A model’s published capabilities do not establish its undisclosed internal algorithm.
Answered in
Test-Time Compute: What Extra Reasoning, Search and Verification Can BuyInference-time budgets can improve selected reasoning tasks. Search and process rewards are useful methods, not a universal architecture or guarantee.
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