Self-Distilled Agentic Reinforcement Learning

The research paper introduces SDAR (Self-Distilled Agentic Reinforcement Learning), a new framework designed to improve the training of large language model agents in complex, multi-turn environments. While standard reinforcement learning excels at high-level task goals, it often lacks the precise, token-level guidance needed for long interactions. To solve this, the authors identify critical flaws in current distillation methods, such as multi-turn instability and the unreliability of teacher models when using specialized context. SDAR addresses these issues by using a gated auxiliary objective that selectively applies teacher feedback, prioritizing helpful endorsements while minimizing the impact of incorrect rejections. This adaptive approach allows the agent to learn from individual tokens at its own pace, resulting in significant performance gains on benchmarks like ALFWorld and WebShop. Ultimately, the method offers a more stable and robust way to refine agent behaviors compared to traditional hybrid training techniques.