RLVR-World: Training World Models with Reinforcement Learning

• URL: http://arxiv.org/abs/2505.13934v2
• Date: Sat, 25 Oct 2025 02:00:20 GMT
• Title: RLVR-World: Training World Models with Reinforcement Learning
• Authors: Jialong Wu, Shaofeng Yin, Ningya Feng, Mingsheng Long,
• Abstract summary: We present RLVR-World, a unified framework that leverages reinforcement learning with verifiable rewards.<n>We demonstrate substantial performance gains on both language- and video-based world models across domains, including text games, web navigation, and robot manipulation.
• Score: 41.04369775904968
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: World models predict state transitions in response to actions and are increasingly developed across diverse modalities. However, standard training objectives such as maximum likelihood estimation (MLE) often misalign with task-specific goals of world models, i.e., transition prediction metrics like accuracy or perceptual quality. In this paper, we present RLVR-World, a unified framework that leverages reinforcement learning with verifiable rewards (RLVR) to directly optimize world models for such metrics. Despite formulating world modeling as autoregressive prediction of tokenized sequences, RLVR-World evaluates metrics of decoded predictions as verifiable rewards. We demonstrate substantial performance gains on both language- and video-based world models across domains, including text games, web navigation, and robot manipulation. Our work indicates that, beyond recent advances in reasoning language models, RLVR offers a promising post-training paradigm for enhancing the utility of generative models more broadly. Code, datasets, models, and video samples are available at the project website: https://thuml.github.io/RLVR-World.

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