interwhen: test-time verification framework for steering reasoning models lands at NeurIPS

rao2z · x · 2026-09-25

The paper interwhen, done during the authors' time at Microsoft Research, is accepted to NeurIPS. It is a single-trajectory verification framework: it periodically polls the reasoning trace and forks inference to recover intermediate states, running verifiers asynchronously alongside generation with negligible overhead on correct executions. To address verifier scarcity beyond math/code, it synthesizes verifiers automatically from natural-language policy documents.

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