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Aymane El Gadarri

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Preprint Jul 2026

OS-Pruner: Pruning Chains-of-Thought of Reasoning Models via Optimal Stopping

OS-Pruner is a lightweight plug-in framework that formulates chain-of-thought pruning as an optimal stopping problem that achieves 20-60\% reduction in generation length with minimal accuracy sacrifice on diverse reasoning benchmarks and base models.

Mohammed Ehab, Aymane El Gadarri, Vivek F. Farias et al. · 0 citations