Gymnasium for AI Agents Has Arrived

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Meet OpenEnv, the open-source Gymnasium for agentic LLMs. It gives you standardized Docker sandboxes with classic step and reset commands, plus dual FastMCP support to train and deploy agent environments seamlessly. Orchestrating secure RL sandboxes is a headache. OpenEnv connects over forty ready environments directly to frameworks like TRL and Unsloth for effortless post-training.