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Large language models (LLMs) have revolutionized natural language processing, yet their propensity for hallucination, generating plausible but factually incorrect or fabricated content, remains a critical challenge. This report provides a…

Computation and Language · Computer Science 2025-08-05 Manuel Cossio

Hallucinations pose a significant challenge to the reliability and alignment of Large Language Models (LLMs), limiting their widespread acceptance beyond chatbot applications. Despite ongoing efforts, hallucinations remain a prevalent…

Computation and Language · Computer Science 2024-02-27 Cem Uluoglakci , Tugba Taskaya Temizel

While large language models (LLMs) have demonstrated remarkable capabilities across a range of downstream tasks, a significant concern revolves around their propensity to exhibit hallucinations: LLMs occasionally generate content that…

Computation and Language · Computer Science 2025-09-16 Yue Zhang , Yafu Li , Leyang Cui , Deng Cai , Lemao Liu , Tingchen Fu , Xinting Huang , Enbo Zhao , Yu Zhang , Chen Xu , Yulong Chen , Longyue Wang , Anh Tuan Luu , Wei Bi , Freda Shi , Shuming Shi

Hallucination in Large Language Models (LLMs) refers to the generation of content that is not faithful to the input or the real-world facts. This paper provides a rigorous treatment of hallucination in LLMs, including formal definitions and…

Computation and Language · Computer Science 2025-08-01 Esmail Gumaan

Large Language Models (LLMs) have transformed the Natural Language Processing (NLP) landscape with their remarkable ability to understand and generate human-like text. However, these models are prone to ``hallucinations'' -- outputs that do…

The emergence of large language models (LLMs) has marked a significant breakthrough in natural language processing (NLP), fueling a paradigm shift in information acquisition. Nevertheless, LLMs are prone to hallucination, generating…

Computation and Language · Computer Science 2024-11-20 Lei Huang , Weijiang Yu , Weitao Ma , Weihong Zhong , Zhangyin Feng , Haotian Wang , Qianglong Chen , Weihua Peng , Xiaocheng Feng , Bing Qin , Ting Liu

Large language models (LLMs) have transformed natural language processing, achieving remarkable performance across diverse tasks. However, their impressive fluency often comes at the cost of producing false or fabricated information, a…

Computation and Language · Computer Science 2026-03-20 Aisha Alansari , Hamzah Luqman

Recent development of Large Vision-Language Models (LVLMs) has attracted growing attention within the AI landscape for its practical implementation potential. However, ``hallucination'', or more specifically, the misalignment between…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Hanchao Liu , Wenyuan Xue , Yifei Chen , Dapeng Chen , Xiutian Zhao , Ke Wang , Liping Hou , Rongjun Li , Wei Peng

The widespread adoption of large language models (LLMs) across diverse AI applications is proof of the outstanding achievements obtained in several tasks, such as text mining, text generation, and question answering. However, LLMs are not…

Computation and Language · Computer Science 2023-11-15 Alessandro Bruno , Pier Luigi Mazzeo , Aladine Chetouani , Marouane Tliba , Mohamed Amine Kerkouri

Despite their impressive ability to generate high-quality and fluent text, generative large language models (LLMs) also produce hallucinations: statements that are misaligned with established world knowledge or provided input context.…

Computation and Language · Computer Science 2025-01-15 Abhilasha Ravichander , Shrusti Ghela , David Wadden , Yejin Choi

Multi-modal Large Language Models (MLLMs) have emerged as a powerful paradigm for integrating visual and textual information, supporting a wide range of multi-modal tasks. However, these models often suffer from hallucination, producing…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Zhiyuan Chen , Yuecong Min , Jie Zhang , Bei Yan , Jiahao Wang , Xiaozhen Wang , Shiguang Shan

As large language models continue to develop in the field of AI, text generation systems are susceptible to a worrisome phenomenon known as hallucination. In this study, we summarize recent compelling insights into hallucinations in LLMs.…

Computation and Language · Computer Science 2023-09-14 Hongbin Ye , Tong Liu , Aijia Zhang , Wei Hua , Weiqiang Jia

Large language models (LLMs) have achieved a degree of success in generating coherent and contextually relevant text, yet they remain prone to a significant challenge known as hallucination: producing information that is not substantiated…

Computation and Language · Computer Science 2024-10-28 Ray Li , Tanishka Bagade , Kevin Martinez , Flora Yasmin , Grant Ayala , Michael Lam , Kevin Zhu

Large Language Models (LLMs) have become increasingly important in natural language processing, enabling advanced data analytics through natural language queries. However, these models often generate "hallucinations"-inaccurate or…

Computation and Language · Computer Science 2024-10-29 Mikhail Rumiantsau , Aliaksei Vertsel , Ilya Hrytsuk , Isaiah Ballah

Large Language Models often generate factually incorrect but plausible outputs, known as hallucinations. We identify a more insidious phenomenon, LLM delusion, defined as high belief hallucinations, incorrect outputs with abnormally high…

Computation and Language · Computer Science 2025-03-11 Hongshen Xu , Zixv yang , Zichen Zhu , Kunyao Lan , Zihan Wang , Mengyue Wu , Ziwei Ji , Lu Chen , Pascale Fung , Kai Yu

Large Language Models (LLMs) have demonstrated remarkable capabilities, revolutionizing the integration of AI in daily life applications. However, they are prone to hallucinations, generating claims that contradict established facts,…

Computation and Language · Computer Science 2024-06-14 A B M Ashikur Rahman , Saeed Anwar , Muhammad Usman , Ajmal Mian

The Large Visual Language Models (LVLMs) enhances user interaction and enriches user experience by integrating visual modality on the basis of the Large Language Models (LLMs). It has demonstrated their powerful information processing and…

Artificial Intelligence · Computer Science 2024-10-22 Wei Lan , Wenyi Chen , Qingfeng Chen , Shirui Pan , Huiyu Zhou , Yi Pan

Large language models (LLMs) frequently generate confident yet inaccurate responses, introducing significant risks for deployment in safety-critical domains. We present a novel, test-time approach to detecting model hallucination through…

Machine Learning · Computer Science 2025-10-07 Hazel Kim , Tom A. Lamb , Adel Bibi , Philip Torr , Yarin Gal

While Large Language Models have transformed how we interact with AI systems, they suffer from a critical flaw: they confidently generate false information that sounds entirely plausible. This hallucination problem has become a major…

Artificial Intelligence · Computer Science 2025-10-28 Piyushkumar Patel

The emergence of large language models (LLMs) is a milestone in generative artificial intelligence, achieving significant success in text comprehension and generation tasks. Despite the tremendous success of LLMs in many downstream tasks,…

Computation and Language · Computer Science 2024-07-16 He Li , Haoang Chi , Mingyu Liu , Wenjing Yang
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