ResearchResearch paperReinforcement Learning · Large Language Models · Robotics & Embodied AI1 source · Oct 12, 2026

CivWorldBench: Evaluating Language World Models in Structured Multi-Agent Sandbox Worlds

We introduce CivWorldBench, a benchmark built on a multi-agent strategy game engine with recorded internal states, controlled observations, and paired intervention rollouts.

Key points

  • The growing use of language models for forecasting motivates a broader evaluation of their world-model capabilities.
  • Stored trajectories make intermediate predictions verifiable, while agent-play experiments test whether world-model capabilities support decision-making.
  • Agent-play experiments identify useful assisted plans and motivate evaluating decision-relevant capabilities beyond association forecasting.
  • These findings identify hidden-state inference, intermediate-state prediction, and effect calibration as priorities for world-model training.

Sources (1)

  • [1]CivWorldBench: Evaluating Language World Models in Structured Multi-Agent Sandbox Worlds
    arXiv (AI, ML, NLP, CV, robotics, multi-agent) · Oct 12, 09:16 AM
    We introduce CivWorldBench, a benchmark built on a multi-agent strategy game engine with recorded internal states, controlled observations, and paired intervention rollouts.
    The growing use of language models for forecasting motivates a broader evaluation of their world-model capabilities.

Extractive summary: sentences quoted from the sources.

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  1. Oct 12, 2026World Models Need a Physical Registry: Learning Internal Predictive States for Physically Plausible World Models
  2. Oct 12, 2026RAR: Rate-Adaptive Rollout for Time-Consistent Interactive World Models
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  4. Oct 12, 2026Multics: Generative Multi-Player World Model with Hierarchical Communication
  5. Oct 12, 2026Relational Learning as World Modeling
  6. Oct 11, 2026ANTE: Anticipate, Then Execute -- Learning Internal World Models for Coding Agents from Verified Beliefs

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