arXiv AI By Youwei Liu, Jian Wang, Hanlin Wang, Wenjie Li

CoMAP: Co-Evolving World Models and Agent Policies for LLM Agents

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CoMAP introduces a framework that jointly evolves textual world models and agent policies through a closed‑loop interaction. At each decision step the world model forecasts future state feedback for candidate actions, while the agent reflects on the reliability of this feedback to refine its action. The resulting on‑policy trajectories are used to self‑distill and update the world model, improving prediction accuracy and long‑horizon decision‑making across embodied planning, web navigation, and tool‑use benchmarks.

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