AI RESEARCH
ECHO: Terminal Agents Learn World Models for Free
arXiv CS.LG
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ArXi:2605.24517v1 Announce Type: new CLI agents are the closest thing language models have to an embodied setting: the model emits commands, the terminal executes them, and the returned stream -- stdout, errors, files, logs, and traces -- records the consequences. We argue that this stream is a supervision signal, but standard agent RL discards it: GRPO-style