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New MMR-V benchmark reveals LLMs struggle with deep video reasoning

A new benchmark called MMR-V has been introduced to evaluate the multimodal deep reasoning capabilities of large language models (LLMs) when processing video content. Unlike existing benchmarks that focus on simple frame matching, MMR-V requires models to perform long-range, multi-frame reasoning and infer information beyond direct perception. Experiments using MMR-V, which comprises 1,257 tasks across 317 videos, revealed that even advanced models like Gemini 2.5 Pro struggle, achieving only 64.3% accuracy, and common reasoning enhancement strategies like Chain-of-Thought offer limited improvements. AI

IMPACT Highlights limitations in current LLMs for complex video understanding, potentially guiding future research in multimodal reasoning.

RANK_REASON The item is a research paper introducing a new benchmark for evaluating AI models. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.CL →

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New MMR-V benchmark reveals LLMs struggle with deep video reasoning

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The item is a research paper introducing a new benchmark for evaluating AI models. [lever_c_demoted from research: ic=1 ai=1.0]
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COVERAGE [1]

  1. arXiv cs.CL TIER_1 English(EN) · Kejian Zhu, Zhuoran Jin, Hongbang Yuan, Jiachun Li, Shangqing Tu, Pengfei Cao, Yubo Chen, Kang Liu, Jun Zhao ·

    MMR-V: What's Left Unsaid? A Benchmark for Multimodal Deep Reasoning in Videos

    arXiv:2506.04141v2 Announce Type: replace-cross Abstract: The sequential structure of videos poses a challenge to the ability of multimodal large language models (MLLMs) to locate multi-frame evidence and conduct multimodal reasoning. However, existing video benchmarks mainly foc…