MM-THEBench: Do Reasoning MLLMs Think Reasonably?
- URL: http://arxiv.org/abs/2601.22735v1
- Date: Fri, 30 Jan 2026 09:17:50 GMT
- Title: MM-THEBench: Do Reasoning MLLMs Think Reasonably?
- Authors: Zhidian Huang, Zijun Yao, Ji Qi, Shangqing Tu, Junxian Ma, Jinxin Liu, Weichuan Liu, Xiaoyin Che, Lei Hou, Juanzi Li,
- Abstract summary: We introduce MM-THEBench, a comprehensive benchmark for assessing hallucinations of intermediate CoTs in reasoning MLLMs.<n> MM-THEBench features a fine-grained taxonomy grounded in cognitive dimensions, diverse data with verified reasoning annotations, and a multi-level automated evaluation framework.
- Score: 45.23711313374087
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Recent advances in multimodal large language models (MLLMs) mark a shift from non-thinking models to post-trained reasoning models capable of solving complex problems through thinking. However, whether such thinking mitigates hallucinations in multimodal perception and reasoning remains unclear. Self-reflective reasoning enhances robustness but introduces additional hallucinations, and subtle perceptual errors still result in incorrect or coincidentally correct answers. Existing benchmarks primarily focus on models before the emergence of reasoning MLLMs, neglecting the internal thinking process and failing to measure the hallucinations that occur during thinking. To address these challenges, we introduce MM-THEBench, a comprehensive benchmark for assessing hallucinations of intermediate CoTs in reasoning MLLMs. MM-THEBench features a fine-grained taxonomy grounded in cognitive dimensions, diverse data with verified reasoning annotations, and a multi-level automated evaluation framework. Extensive experiments on mainstream reasoning MLLMs reveal insights into how thinking affects hallucination and reasoning capability in various multimodal tasks.
Related papers
- Do MLLMs Really See It: Reinforcing Visual Attention in Multimodal LLMs [55.61018839017648]
Chain-of-thought (CoT) reasoning has substantially improved multimodal large language models (MLLMs) on complex reasoning tasks.<n>Existing approaches largely rely on long textual reasoning trajectories and provide limited mechanisms for learning stable visual attention policies.<n>We propose SAYO, a visual reasoning model trained with a reinforcement learning framework that introduces a region-level visual attention-based reward.
arXiv Detail & Related papers (2026-02-09T03:33:23Z) - MIRAGE: Assessing Hallucination in Multimodal Reasoning Chains of MLLM [58.2298313720146]
Multimodal hallucinations are multi-sourced and arise from diverse causes.<n>Existing benchmarks fail to adequately distinguish between perception-induced hallucinations and reasoning-induced hallucinations.
arXiv Detail & Related papers (2025-05-30T05:54:36Z) - More Thinking, Less Seeing? Assessing Amplified Hallucination in Multimodal Reasoning Models [43.465268635499754]
Test-time compute has empowered large language models to generate extended reasoning chains.<n>As generations become longer, models tend to drift away from image-grounded content and rely more heavily on language priors.
arXiv Detail & Related papers (2025-05-23T05:08:40Z) - Detection and Mitigation of Hallucination in Large Reasoning Models: A Mechanistic Perspective [11.013059864022667]
Reasoning Hallucinations are logically coherent but factually incorrect reasoning traces.<n>These errors are embedded within structured reasoning, making them more difficult to detect and potentially more harmful.<n>We propose the Reasoning Score, which quantifies the depth of reasoning by measuring the divergence between logits.<n>We also introduce GRPO-R, an enhanced reinforcement learning algorithm that incorporates step-level deep reasoning rewards via potential-based shaping.
arXiv Detail & Related papers (2025-05-19T09:16:40Z) - Combating Multimodal LLM Hallucination via Bottom-Up Holistic Reasoning [151.4060202671114]
multimodal large language models (MLLMs) have shown unprecedented capabilities in advancing vision-language tasks.<n>This paper introduces a novel bottom-up reasoning framework to address hallucinations in MLLMs.<n>Our framework systematically addresses potential issues in both visual and textual inputs by verifying and integrating perception-level information with cognition-level commonsense knowledge.
arXiv Detail & Related papers (2024-12-15T09:10:46Z) - Thinking Before Looking: Improving Multimodal LLM Reasoning via Mitigating Visual Hallucination [13.706325901731665]
Multimodal large language models (MLLMs) have advanced the integration of visual and linguistic modalities.
Current approaches like chain of thought (CoT) reasoning have augmented the cognitive capabilities of large language models (LLMs)
But their adaptation to MLLMs is hindered by heightened risks of hallucination in cross-modality comprehension.
arXiv Detail & Related papers (2024-11-15T21:01:37Z) - What if...?: Thinking Counterfactual Keywords Helps to Mitigate Hallucination in Large Multi-modal Models [50.97705264224828]
We propose Counterfactual Inception, a novel method that implants counterfactual thinking into Large Multi-modal Models.
We aim for the models to engage with and generate responses that span a wider contextual scene understanding.
Comprehensive analyses across various LMMs, including both open-source and proprietary models, corroborate that counterfactual thinking significantly reduces hallucination.
arXiv Detail & Related papers (2024-03-20T11:27:20Z) - FANToM: A Benchmark for Stress-testing Machine Theory of Mind in
Interactions [94.61530480991627]
Theory of mind evaluations currently focus on testing models using passive narratives that inherently lack interactivity.
We introduce FANToM, a new benchmark designed to stress-test ToM within information-asymmetric conversational contexts via question answering.
arXiv Detail & Related papers (2023-10-24T00:24:11Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.