ECHO (Environment Cross-entropy Hybrid Objective) demo support just landed in OpenEnv, and it's a cool idea: train agents to learn a world model almost for free... (opens in new tab)

ECHO (Environment Cross-entropy Hybrid Objective) demo support just landed in OpenEnv, and it's a cool idea: train agents to learn a world model almost for free original paper by @VaishShrivas, Piero Kauffman, Ahmed Awadallah and @DimitrisPapail @MSFTResearch when an agent acts in an env, a rollout has 2 sides: what the agent writes and what the env writes back train a CLI agent with GRPO and the reward shapes the action tokens, while the env's responses get masked out of the loss all that gr...