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News/Multi-Harness Reinforcement Learning for Coding Agents: Training Gains and Harness Dependence
arxiv
PublishedOctober 13, 2026 at 4:00 AM

Multi-Harness Reinforcement Learning for Coding Agents: Training Gains and Harness Dependence

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arXiv:2609.04518v2 Announce Type: replace Abstract: Recent systems train coding agents with reinforcement learning (RL) on trajectories collected through multiple execution harnesses. However, gains under the training harnesses leave open whether the improvements transfer to unseen interfaces and ho

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