Reasoning models usually inherit “wait” from training data, not reinforcement learning

Across open-model training histories, the authors find that reinforcement learning can improve mathematics accuracy without introducing “wait”, while different training recipes amplify or erase an inherited marker.

Chinese Tech
Zhizhuo Kou · Sizai Hou · Long Chen · Jian Yang · Junyu Luo · Jingshu Peng · +3 more

The Hong Kong University of Science and Technology · Huawei Noahah’s Ark Lab · Peking University

Research Digest··2 min read
Kou et al.

The authors followed open-model training histories, including OLMo-3 checkpoints, released RL trajectories, and models fine-tuned on reasoning traces.

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Research Digest

Written by Alwyn Sage, research editor. Plate by Ollie Flash, picture desk.

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