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Author

Lan-Bo Liu

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Preprint Aug 2026

Step-Level On-Policy Distillation: Interpolating Between On-Policy Distillation and Supervised Fine-Tuning

Step-Level On-Policy Distillation is proposed, which combines the long-horizon correction of supervised fine-tuning (SFT) with the on-policy advantage of OPD to provide step-level supervision over complete student-generated trajectories and substantially outperforms conventional SFT and OPD.

Changhui Sun, Lan-Bo Liu, Hang Lei et al. · 2 citations

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