Distilled Reinforcement Learning for LLM Post-training

Large language model (LLM) post-training is essential for improving reasoning, adaptation, and alignment. Existing methods mainly follow two paradigms: reinforcement learning (RL) and on-policy distillation (OPD). However, RL relies on coarse-grained outcome supervision, resulting in difficult credit assignment and limited capability to acquire new knowledge. OPD, meanwhile, unconditionally matches teacher logits through KL divergence, which creates a dilemma: similar teachers provide little new

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ethics.ai (18 July 2026), “Distilled Reinforcement Learning for LLM Post-training,” evidence record 11908, https://ethics.ai/record/11908 (originally published by HuggingFace Daily Papers).

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