EP261: EchoRL turns hesitation into genius

Title: EchoRL: Reinforcement Learning via Rollout EchoingSource: http://arxiv.org/abs/2605.31228v1Summary:This paper introduces EchoRL, a novel reinforcement learning primitive that prevents training signal collapse in reasoning models by recovering gradients from successfully verified rollouts. It establishes a foundational method for post-training LLMs to achieve higher reasoning performance without encountering the typical diminishing returns of standard RLVR methods.