Search and verifier loops: best-of-n, trees, refinement and reasoning budgets
Use a verifier to pick among samples (best-of-n with simulated accuracy from 40% to 93%), why verifier quality caps the gain, tree and beam search over reasoning steps, self-refinement loops, controlling thinking-token budgets, and the cost accounting.
19 min·Verified 2026-11Pro+50 XP
Majority voting asks "which answer is common?". A verifier asks "which answer is right?". When you can check answers, you can turn extra samples into accuracy far more efficiently.
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