Flattery in Motion: Benchmarking and Analyzing Sycophancy in Video-LLMs

Fuente: arXiv
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Main Authors: Zhou, Wenrui, Hendy, Mohamed, Yang, Shu, Yang, Qingsong, Guo, Zikun, Luo, Yuyu, Hu, Lijie, Wang, Di
Format: Preprint
Published: 2025
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author Zhou, Wenrui
Hendy, Mohamed
Yang, Shu
Yang, Qingsong
Guo, Zikun
Luo, Yuyu
Hu, Lijie
Wang, Di
author_facet Zhou, Wenrui
Hendy, Mohamed
Yang, Shu
Yang, Qingsong
Guo, Zikun
Luo, Yuyu
Hu, Lijie
Wang, Di
contents As video large language models (Video-LLMs) become increasingly integrated into real-world applications that demand grounded multimodal reasoning, ensuring their factual consistency and reliability is of critical importance. However, sycophancy, the tendency of these models to align with user input even when it contradicts the visual evidence, undermines their trustworthiness in such contexts. Current sycophancy research has largely overlooked its specific manifestations in the videolanguage domain, resulting in a notable absence of systematic benchmarks and targeted evaluations to understand how Video-LLMs respond under misleading user input. To fill this gap, we propose VISE(Video-LLM Sycophancy Benchmarking and Evaluation), the first benchmark designed to evaluate sycophantic behavior in state-of-the-art Video-LLMs across diverse question formats, prompt biases, and visual reasoning tasks. Specifically, VISEpioneeringly brings linguistic perspectives on sycophancy into the video domain, enabling fine-grained analysis across multiple sycophancy types and interaction patterns. Furthermore, we propose two potential training-free mitigation strategies revealing potential paths for reducing sycophantic bias: (i) enhancing visual grounding through interpretable key-frame selection and (ii) steering model behavior away from sycophancy via targeted, inference-time intervention on its internal neural representations. Our code is available at https://anonymous.4open.science/r/VideoSycophancy-567F.
format Preprint
id arxiv_https___arxiv_org_abs_2506_07180
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Flattery in Motion: Benchmarking and Analyzing Sycophancy in Video-LLMs
Zhou, Wenrui
Hendy, Mohamed
Yang, Shu
Yang, Qingsong
Guo, Zikun
Luo, Yuyu
Hu, Lijie
Wang, Di
Computation and Language
Artificial Intelligence
Computer Vision and Pattern Recognition
As video large language models (Video-LLMs) become increasingly integrated into real-world applications that demand grounded multimodal reasoning, ensuring their factual consistency and reliability is of critical importance. However, sycophancy, the tendency of these models to align with user input even when it contradicts the visual evidence, undermines their trustworthiness in such contexts. Current sycophancy research has largely overlooked its specific manifestations in the videolanguage domain, resulting in a notable absence of systematic benchmarks and targeted evaluations to understand how Video-LLMs respond under misleading user input. To fill this gap, we propose VISE(Video-LLM Sycophancy Benchmarking and Evaluation), the first benchmark designed to evaluate sycophantic behavior in state-of-the-art Video-LLMs across diverse question formats, prompt biases, and visual reasoning tasks. Specifically, VISEpioneeringly brings linguistic perspectives on sycophancy into the video domain, enabling fine-grained analysis across multiple sycophancy types and interaction patterns. Furthermore, we propose two potential training-free mitigation strategies revealing potential paths for reducing sycophantic bias: (i) enhancing visual grounding through interpretable key-frame selection and (ii) steering model behavior away from sycophancy via targeted, inference-time intervention on its internal neural representations. Our code is available at https://anonymous.4open.science/r/VideoSycophancy-567F.
title Flattery in Motion: Benchmarking and Analyzing Sycophancy in Video-LLMs
topic Computation and Language
Artificial Intelligence
Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2506.07180