1HallusionBench
Control-group diagnosis of language hallucination and visual illusion in LVLMs.
control groupsvisual illusionlanguage hallucination
Consistency-based
vision-language
CVPR 2024
First posted Oct 23, 2023
paired visual diagnosis
Authors: Tianrui Guan, Fuxiao Liu, Xiyang Wu·Corresponding: not specified·Affiliation: University of Maryland, College Park
2POPE
Polling-based object probing for detecting object hallucination in LVLMs.
object existenceyes/no probingadversarial negatives
Consistency-based
vision-language
EMNLP 2023
First posted May 17, 2023
object perception probing
Authors: Yifan Li, Yifan Du, Kun Zhou·Corresponding: Wayne Xin Zhao·Affiliation: Renmin University of China; Meituan Group
3FaithScore
Atomic image-fact verification for fine-grained hallucination detection.
atomic factsimage groundingreference-free
Knowledge-based
vision-language
Findings of EMNLP 2024
First posted Nov 2, 2023
atomic fact verification
Authors: Liqiang Jing, Ruosen Li, Yunmo Chen·Corresponding: not specified·Affiliation: University of Texas at Dallas; Johns Hopkins University
4HaELM
A reproducible local language-model evaluator for LVLM hallucinations.
LLM evaluatorlocal evaluationhallucination scoring
Model-based
vision-language
arXiv 2023
First posted Aug 29, 2023
model-based evaluation
Authors: Junyang Wang, Yiyang Zhou, Guohai Xu·Corresponding: not specified·Affiliation: Shandong University; Beijing Jiaotong University; Xi'an Jiaotong University
5AMBER
An LLM-free pipeline for detecting existence, attribute, and relation hallucinations.
existenceattributesrelations
Knowledge-based
vision-language
arXiv 2023
First posted Nov 13, 2023
multi-dimensional detection
Authors: Junyang Wang, Yuhang Wang, Guohai Xu·Corresponding: not specified·Affiliation: Beijing Jiaotong University; Alibaba Group
6GLSim: Detecting Object Hallucinations in LVLMs via Global-Local Similarity
A training-free detector that combines global scene similarity with local visual grounding for object hallucination detection.
global-local similarityVisual Logit Lensobject grounding
Model-based
vision-language
NeurIPS 2025
First posted Aug 27, 2025
global-local grounding
Authors: Seongheon Park, Sharon Li·Corresponding: not specified·Affiliation: University of Wisconsin–Madison
7Instruction Lens Score: Your Instruction Contributes a Powerful Object Hallucination Detector for Multimodal Large Language Models
A training-free object hallucination detector that uses calibrated local and instruction-context consistency scores.
instruction embeddingsLogit Lensobject hallucination
Model-based
vision-language
ICML 2026
First posted May 12, 2026
instruction-token scoring
Authors: Runhe Lai, Xinhua Lu, Yanqi Wu·Corresponding: Weijiang Yu, Ruixuan Wang·Affiliation: Sun Yat-sen University; Peng Cheng Laboratory; Key Laboratory of Machine Intelligence and Advanced Computing, MOE
8Devils in Middle Layers of Large Vision-Language Models: Interpreting, Detecting and Mitigating Object Hallucinations via Attention Lens
An attention-lens analysis identifies middle-layer signals for object hallucination detection and visual-attention adjustment.
attention lensmiddle layersobject hallucination
Model-based
vision-language
CVPR 2025
First posted Nov 23, 2024
attention-based signals
Authors: Zhangqi Jiang, Junkai Chen, Beier Zhu·Corresponding: Tingjin Luo, Xu Yang·Affiliation: National University of Defense Technology; Southeast University; Nanyang Technological University
9ZINA: Multimodal Fine-grained Hallucination Detection and Editing
A span-level detector that classifies six hallucination error types and proposes grounded edits for MLLM outputs.
fine-grained spanserror taxonomyhallucination editing
Model-based
vision-language
CVPR 2026
First posted Jun 16, 2025
span-level detection
Authors: Yuiga Wada, Kazuki Matsuda, Komei Sugiura·Corresponding: not specified·Affiliation: Keio AI Research Center; Keio University; Carnegie Mellon University
10Seeing is Believing: Rich-Context Hallucination Detection for MLLMs via Backward Visual Grounding
VBackChecker detects hallucinations by grounding response claims backward to image pixels with rich contextual evidence.
backward visual groundingrich-contextpixel-level grounding
Knowledge-based
vision-language
AAAI 2026
First posted Nov 15, 2025
pixel-level grounding
Authors: Pinxue Guo, Chongruo Wu, Xinyu Zhou·Corresponding: Wei Zhang, Wenqiang Zhang·Affiliation: Fudan University; Independent Researcher
11Detecting and Mitigating Hallucination in Large Vision Language Models via Fine-Grained AI Feedback
A detect-then-rewrite pipeline uses fine-grained object, attribute, and relationship feedback to train HSA-DPO.
fine-grained feedbackseverity-awaredetect-then-rewrite
Model-based
vision-language
AAAI 2025
First posted Apr 22, 2024
sentence-level detection
Authors: Wenyi Xiao, Ziwei Huang, Leilei Gan·Corresponding: Leilei Gan·Affiliation: Zhejiang University; Alibaba Group
12HalLoc: Token-level Localization of Hallucinations for Vision Language Models
HalLoc introduces token-level hallucination localization data and a concurrent low-overhead detector.
token-level localizationgraded confidencehallucination types
Model-based
vision-language
CVPR 2025
First posted Jun 12, 2025
token-level detection
Authors: Eunkyu Park, Minyeong Kim, Gunhee Kim·Corresponding: Gunhee Kim·Affiliation: Seoul National University
13MHALO: Evaluating MLLMs as Fine-grained Hallucination Detectors
A fine-grained hallucination detection benchmark that evaluates MLLMs on recognition and token-level localization.
token-level detectionmeta-evaluation benchmarkMLLM as judge
Model-based
vision-language
fine-grained F1/IoU
Authors: Yishuo Cai, Renjie Gu, Jiaxu Li·Corresponding: Xuancheng Huang·Affiliation: Central South University; Zhipu AI; Tsinghua University
14Detecting and Preventing Hallucinations in Large Vision Language Models
M-HalDetect provides fine-grained multimodal annotations and reward-model signals for hallucination detection.
fine-grained feedbackreward modelingobject attribute relation
Model-based
vision-language
AAAI 2024
First posted Aug 11, 2023
fine-grained detection
Authors: Anisha Gunjal, Jihan Yin, Erhan Bas·Corresponding: Erhan Bas·Affiliation: Scale AI
15Hal-Eval: a Universal and Fine-grained Hallucination Evaluation Framework for Large Vision Language Models
A unified discriminative and generative evaluator covering object, attribute, relation, and event hallucinations.
event hallucinationfine-grained evaluationdiscriminative evaluation
Knowledge-based
vision-language
ACM MM 2024
First posted Feb 24, 2024
universal hallucination evaluation
Authors: Chaoya Jiang, Hongrui Jia, Mengfan Dong·Corresponding: Wei Ye·Affiliation: Peking University
16TLDR: Token-Level Detective Reward Model for Large Vision Language Models
TLDR assigns token-level rewards to expose hallucinated spans and support visual-language self-correction.
token-level rewardsself-correctionhallucination evaluation
Model-based
vision-language
ICLR 2025
First posted Oct 7, 2024
token-level reward
Authors: Deqing Fu, Tong Xiao, Rui Wang·Corresponding: Deqing Fu, Lawrence Chen·Affiliation: Meta; University of Southern California
17Detecting and Evaluating Medical Hallucinations in Large Vision Language Models
Med-HallMark and MediHallDetector provide hierarchical medical hallucination evaluation and fine-grained detection.
medical hallucinationhierarchical evaluationmultitask detection
Model-based
vision-language
arXiv 2024
First posted Jun 14, 2024
medical hallucination detection
Authors: Jiawei Chen, Dingkang Yang, Tong Wu·Corresponding: Lihua Zhang·Affiliation: Fudan University; Tencent Youtu Lab; Cognition and Intelligent Technology Laboratory
18Unified Hallucination Detection for Multimodal Large Language Models
UNIHD unifies claim-level hallucination detection with auxiliary tools and introduces the MHaluBench meta-evaluation benchmark.
tool-augmented verificationclaim-level detectionmulti-category detection
Knowledge-based
vision-language
ACL 2024
First posted Feb 5, 2024
unified hallucination detection
Authors: Xiang Chen, Chenxi Wang, Yida Xue·Corresponding: Ningyu Zhang, Huajun Chen·Affiliation: Zhejiang University; Ant Group
19VL-Uncertainty: Detecting Hallucination in Large Vision-Language Model via Uncertainty Estimation
VL-Uncertainty uses semantic-equivalent perturbations and response uncertainty to detect hallucinations without extra labels.
semantic-equivalent perturbationresponse entropyuncertainty estimation
Uncertainty-based
vision-language
arXiv 2024
First posted Nov 18, 2024
uncertainty-based detection
Authors: Ruiyang Zhang, Hu Zhang, Zhedong Zheng·Corresponding: Zhedong Zheng·Affiliation: University of Macau; CSIRO Data61
20Logical Closed Loop: Uncovering Object Hallucinations in Large Vision-Language Models
LogicCheckGPT probes object-to-attribute and attribute-to-object consistency in a training-free closed loop.
logical consistencyobject hallucinationclosed-loop probing
Consistency-based
vision-language
Findings of ACL 2024
First posted Feb 18, 2024
logical consistency probing
Authors: Junfei Wu, Qiang Liu, Ding Wang·Corresponding: Shu Wu·Affiliation: Institute of Automation, Chinese Academy of Sciences; University of Chinese Academy of Sciences; Nanjing University
21Structural Graph Probing of Vision–Language Models
Graph-based probes model neuron-correlation topology to expose structural signals associated with multimodal behavior and hallucination.
graph probingneuron topologyhallucination classification
Model-based
vision-language
arXiv 2026
First posted Mar 28, 2026
structural hallucination probing
Authors: Haoyu He, Yue Zhuo, Yu Zheng·Corresponding: not specified·Affiliation: Northeastern University; Massachusetts Institute of Technology
22Lyapunov Probes for Hallucination Detection in Large Foundation Models
Lyapunov Probes use stability-constrained perturbation analysis to distinguish stable factual regions from hallucination-prone boundaries.
stability theoryrepresentation probingperturbation analysis
Model-based
vision-language
arXiv 2026
First posted Mar 6, 2026
stability-based detection
Authors: Bozhi Luan, Gen Li, Yalan Qin·Corresponding: Zhaoxin Fan·Affiliation: Beihang University; Shanghai University
23HALP: Detecting Hallucinations in Vision-Language Models without Generating a Single Token
HALP predicts hallucination risk before decoding by probing visual, vision-token, and query-token representations.
pre-generation detectioninternal representationslightweight probes
Model-based
vision-language
EACL 2026
First posted Mar 5, 2026
pre-generation risk prediction
Authors: Sai Akhil Kogilathota, Sripadha Vallabha E G, Luzhe Sun·Corresponding: not specified·Affiliation: Stony Brook University; Toyota Technological Institute at Chicago
24VADE: Visual Attention Guided Hallucination Detection and Elimination
VADE learns sequential patterns from raw visual attention maps for fine-grained hallucination detection and mitigation.
visual attentionsequence modelingfine-grained detection
Model-based
vision-language
attention-map detection
Authors: Vishnu Prabhakaran, Purav Aggarwal, Vinay Kumar Verma·Corresponding: not specified·Affiliation: Amazon, India; Amazon, USA
25HALLUSHIFT++: Bridging Language and Vision through Internal Representation Shifts for Hierarchical Hallucinations in MLLMs
HALLUSHIFT++ extends internal distribution-shift analysis to hierarchical category, attribute, and relation hallucinations in MLLMs.
representation shiftshierarchical hallucinationsemantic chunking
Model-based
vision-language
arXiv 2025
First posted Dec 8, 2025
hierarchical internal-state detection
Authors: Sujoy Nath, Arkaprabha Basu, Sharanya Dasgupta·Corresponding: Swagatam Das·Affiliation: Netaji Subhash Engineering College; TCG Crest; Indian Statistical Institute
26PAS: Prelim Attention Score for Detecting Object Hallucinations in Large Vision-Language Models
PAS measures attention on preliminary output tokens as a training-free, reference-free object hallucination signal.
prelim-token attentiontraining-freeobject hallucination
Model-based
vision-language
CVPR 2026
First posted Nov 14, 2025
attention-based object detection
Authors: Nhat Hoang-Xuan, Minh Vu, My T. Thai·Corresponding: not specified·Affiliation: Los Alamos National Laboratory; University of Florida
27MTRE: Multi-Token Reliability Estimation for Hallucination Detection in VLMs
MTRE aggregates early multi-token logits with likelihood-ratio evidence to estimate VLM response reliability.
multi-token logitsreliability estimationlikelihood ratios
Uncertainty-based
vision-language
arXiv 2025
First posted May 16, 2025
multi-token reliability detection
Authors: Geigh Zollicoffer, Minh Vu, Manish Bhattarai·Corresponding: not specified·Affiliation: Los Alamos National Laboratory
28Beyond Token Probes: Hallucination Detection via Activation Tensors with ACT-ViT
ACT-ViT treats full layer-by-token activation tensors as image-like inputs for cross-LLM hallucination detection.
activation tensorsvision transformercross-model transfer
Model-based
vision-language
NeurIPS 2025
First posted Sep 30, 2025
activation-tensor detection
Authors: Guy Bar-Shalom, Fabrizio Frasca, Yaniv Galron·Corresponding: not specified·Affiliation: Technion
29TruthPrInt: Mitigating Large Vision-Language Models Object Hallucination Via Latent Truthful-Guided Pre-Intervention
A latent-state detector identifies hallucinated object tokens and guides decoding toward a shared truthful direction.
truthful directionlatent subspacepre-intervention
Model-based
vision-language
ICCV 2025
First posted Mar 13, 2025
latent-state detection
Authors: Jinhao Duan, Fei Kong, Hao Cheng·Corresponding: Kaidi Xu·Affiliation: Drexel University; University of Electronic Science and Technology of China; Hong Kong University of Science and Technology (Guangzhou)
30Beyond the Global Scores: Fine-Grained Token Grounding as a Robust Detector of LVLM Hallucinations
A patch-level detector combines attention dispersion and cross-modal grounding consistency to localize hallucinated tokens.
attention dispersioncross-modal groundingpatch-level detection
Model-based
vision-language
CVPR 2026
First posted Apr 6, 2026
token-grounding detection
Authors: Tuan Dung Nguyen, Minh Khoi Ho, Qi Chen·Corresponding: Phi Le Nguyen, Vu Minh Hieu Phan·Affiliation: Hanoi University of Science and Technology; Australian Institute for Machine Learning, University of Adelaide; Mohamed bin Zayed University of Artificial Intelligence