12h ago

Researchers Release Open-Source ECHO For Terminal-Agent RL Training

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Original post
Dimitris PapailiopoulosDP#197@DIMITRISPAPAILOPBoyuan (Nemo) ChenB(Boyuan (Nemo) Chen|@BOYUAN_CHEN

Terminal agents waste their best training signal. ECHO adds a small auxiliary loss during GRPO: predict the terminal output caused by each command. Failed rollouts become dense supervision. TerminalBench-2.0, Qwen3-14B pass@1: 5.17 -> 10.79.

6:33 AM · May 27, 2026 View on X
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Dimitris PapailiopoulosDP#197|@DIMITRISPAPAIL

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Users are excited about the open-source ECHO release for terminal-agent RL training because of its future community potential and the amazing collaborators involved.

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