arxivcs.CVcs.AIcs.MM2026-07-14
Accuracy Without Grounding: Diagnosing Visual Dependency Dissociation in Video LLM Benchmarks
Benchmark accuracy in video large language models (LLMs) is often treated as evidence of visual understanding. We audit this assumption across twenty models spanning 2-78B parameters and ten architecture families. We introduce the Visual Dependency Gap (VDG), the difference in pe…