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PhantomEnvironments: How Fictional Worlds Solve the Agent Training Bottleneck

Training LLM agents with reinforcement learning hits a hard wall: you need environments that provide verifiable rewards, support long-horizon interaction, and scale without burning budget. Human-curated data is expensive. LLM-generated environments hallucinate and leak benchmark contamination. Phan…

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  1. 2026-10-01 10:05 · DEV Community — Machine Learning
    PhantomEnvironments: How Fictional Worlds Solve the Agent Training Bottleneck

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