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"PhyWorldBench": A Comprehensive Evaluation of Physical Realism in Text-to-Video Models

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arxiv 2507.13428 v3 pith:RI6GJKDW submitted 2025-07-17 cs.CV cs.AI

"PhyWorldBench": A Comprehensive Evaluation of Physical Realism in Text-to-Video Models

classification cs.CV cs.AI
keywords modelsphysicalphysicsevaluategenerationphenomenapromptsanti-physics
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Video generation models have achieved remarkable progress in creating high-quality, photorealistic content. However, their ability to accurately simulate physical phenomena remains a critical and unresolved challenge. This paper presents PhyWorldBench, a comprehensive benchmark designed to evaluate video generation models based on their adherence to the laws of physics. The benchmark covers multiple levels of physical phenomena, ranging from fundamental principles such as object motion and energy conservation to more complex scenarios involving rigid body interactions and human or animal motion. Additionally, we introduce a novel Anti-Physics category, where prompts intentionally violate real-world physics, enabling the assessment of whether models can follow such instructions while maintaining logical consistency. Besides large-scale human evaluation, we also design a simple yet effective method that utilizes current multimodal large language models to evaluate physics realism in a zero-shot fashion. We evaluate 12 state-of-the-art text-to-video generation models, including five open-source and five proprietary models, with detailed comparison and analysis. Through systematic testing across 1050 curated prompts spanning fundamental, composite, and anti-physics scenarios, we identify pivotal challenges these models face in adhering to real-world physics. We further examine their performance under diverse physical phenomena and prompt types, and derive targeted recommendations for crafting prompts that enhance fidelity to physical principles.

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Cited by 15 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. PhysInOne: Visual Physics Learning and Reasoning in One Suite

    cs.CV 2026-04 unverdicted novelty 8.0

    PhysInOne is a new dataset of 2 million videos across 153,810 dynamic 3D scenes covering 71 physical phenomena, shown to improve AI performance on physics-aware video generation, prediction, property estimation, and m...

  2. MiraBench: Evaluating Action-Conditioned Reliability in Robotic World Models

    cs.AI 2026-05 unverdicted novelty 7.0

    MiraBench defines action-conditioned reliability via three levels (physics adherence, action-following fidelity, optimism bias detection) and applies it to 12 model configurations using a 16,000-judgment human corpus,...

  3. Are Video Models Zero-Shot Learners and Reasoners in Education? EduVideoBench, A Knowledge-Skills-Attitude Benchmark for Educational Video Generation

    cs.CL 2026-05 unverdicted novelty 7.0

    EduVideoBench is a new KSA-grounded benchmark that evaluates five frontier video generation models and finds substantial gaps in educational validity across knowledge, skills, and attitudes.

  4. WBench: A Comprehensive Multi-turn Benchmark for Interactive Video World Model Evaluation

    cs.CV 2026-05 unverdicted novelty 7.0

    WBench is a benchmark with 289 test cases and 1,058 turns for evaluating interactive world models using 22 automated metrics validated against human judgments.

  5. CRONOS: Benchmarking Counterfactual Physical Consistency in Video Models

    cs.CV 2026-05 unverdicted novelty 7.0

    CRONOS benchmark shows recent open-source video generators fail to preserve physical consistency under controlled changes to viewpoint, scene, object category, and appearance.

  6. PhyGround: Benchmarking Physical Reasoning in Generative World Models

    cs.CV 2026-05 accept novelty 7.0

    PhyGround is a new benchmark with curated prompts, a 13-law taxonomy, large-scale human annotations, and an open physics-specialized VLM judge for evaluating physical reasoning in generative video models.

  7. Do Joint Audio-Video Generation Models Understand Physics?

    cs.SD 2026-05 unverdicted novelty 7.0

    Current joint audio-video generation models lack robust physical commonsense, especially during transitions and when prompted for impossible behaviors.

  8. Do Joint Audio-Video Generation Models Understand Physics?

    cs.SD 2026-05 unverdicted novelty 7.0

    AV-Phys Bench shows that current joint audio-video models lack robust physical commonsense, with major drops on transitions and deliberate anti-physics prompts.

  9. Agentic World Modeling: Foundations, Capabilities, Laws, and Beyond

    cs.AI 2026-04 unverdicted novelty 7.0

    Proposes a levels x laws taxonomy for world models in AI agents, defining L1-L3 capabilities across physical, digital, social, and scientific regimes while reviewing over 400 works to outline a roadmap for advanced ag...

  10. OSCBench: Benchmarking Object State Change in Text-to-Video Generation

    cs.CV 2026-03 unverdicted novelty 7.0

    OSCBench demonstrates that text-to-video models produce inaccurate and temporally inconsistent object state changes, with performance dropping sharply on novel and compositional action scenarios.

  11. BadDreamer: Transferable Backdoor Attacks against Video World Models for Autonomous Driving

    cs.CV 2026-06 unverdicted novelty 6.0

    Introduces BadDreamer, a backdoor attack that poisons the transition dynamics of video world models so that a trigger causes hallucination of obstacle-free futures, transferring to unsafe action predictions in autonom...

  12. Lighting-grounded Video Generation with Renderer-based Agent Reasoning

    cs.CV 2026-04 unverdicted novelty 6.0

    LiVER conditions video diffusion models on renderer-derived 3D control signals for disentangled, editable control over object layout, lighting, and camera trajectory.

  13. MPMWorlds: Material-Point-Method Simulations for Inferring and Extrapolating Physical Dynamics

    cs.GR 2026-06 unverdicted novelty 5.0

    Assembles MPM simulation dataset and compares code generation versus video diffusion for inferring physical parameters and extrapolating dynamics from videos.

  14. Physically Viable World Models: A Case for Query-Conditioned Embodied AI

    cs.AI 2026-05 unverdicted novelty 5.0

    Embodied AI requires query-conditioned world models that select the simplest physical abstraction sufficient to answer intervention queries.

  15. Agentic World Modeling: Foundations, Capabilities, Laws, and Beyond

    cs.AI 2026-04 conditional novelty 4.0

    A survey proposing a three-level capability taxonomy (L1 Predictor, L2 Simulator, L3 Evolver) for world models across physical, digital, social, and scientific domains.