ECHO: terminal agents learn world models for free during RL, earns NeurIPS spotlight
DimitrisPapail · x · 2026-09-25
In the article 'ECHO: Terminal Agents Learn World Models for Free' (NeurIPS spotlight), the authors teach CLI agents to predict terminal responses during RL alongside the usual GRPO loss on actions. The change is minimal—same rollout and forward pass—but lets agents learn a world model of the terminal environment essentially for free.
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