Challenge: Large language models (LLMs) produce hallucinated text, compromising their practical utility in professional contexts.
Approach: They have developed an unconstrained hallucination generation evaluation benchmark that contains hallucines generated by large language models with minimal restrictions.
Outcome: The proposed benchmarks are based on a Chinese-language dataset that is lacking in the field.

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Challenge: Existing large language models (LLMs) are prone to generate hallucinations . a recent study shows that LLMs are able to generate content that conflicts with the source or cannot be verified by factual knowledge.
Approach: They propose a framework to evaluate the performance of large language models (LLMs) they propose to use a sample of generated and human-annotated hallucinated samples to evaluate their performance .
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HALoGEN: Fantastic LLM Hallucinations and Where to Find Them (2025.acl-long)

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Challenge: generative large language models produce hallucinations that are not aligned with world knowledge or input context.
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The Troubling Emergence of Hallucination in Large Language Models - An Extensive Definition, Quantification, and Prescriptive Remediations (2023.emnlp-main)

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Challenge: Recent advances in Large Language Models have generated widespread acclaim, but hallucination has also emerged as a by-product.
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Tutorial Proposal: Hallucination in Large Language Models (2024.lrec-tutorials)

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Challenge: Grasping the intricacies of hallucination in LLMs can be daunting, especially for those new to the field.
Approach: This tutorial aims to bridge the gap between the field and the field of hallucination . it will explore the key aspects of hallucinonation, including benchmarking, detection, and mitigation techniques .
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Benchmarking Hallucination in Large Language Models Based on Unanswerable Math Word Problem (2024.lrec-main)

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Challenge: Large language models (LLMs) are highly effective in various natural language processing tasks, but can produce unreliable conjectures in ambiguous contexts, which is known as hallucination.
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HalluLens: LLM Hallucination Benchmark (2025.acl-long)

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Challenge: Large language models (LLMs) generate responses that deviate from user input or training data, a phenomenon known as "hallucination" .
Approach: They propose a hallucination benchmark HalluLens that includes both extrinsic and intrinsic evaluation tasks to distinguish between extrindic and intrinsic hallucines.
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ANAH: Analytical Annotation of Hallucinations in Large Language Models (2024.acl-long)

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Challenge: a comprehensive and fine-grained measurement of the hallucination is crucial for LLMs' wide applications.
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HypoTermQA: Hypothetical Terms Dataset for Benchmarking Hallucination Tendency of LLMs (2024.eacl-srw)

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Challenge: Hallucinations pose a significant challenge to the reliability and alignment of Large Language Models (LLMs), limiting their widespread acceptance beyond chatbot applications.
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The Dawn After the Dark: An Empirical Study on Factuality Hallucination in Large Language Models (2024.acl-long)

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Challenge: a growing number of researchers are studying the hallucination issue in large language models.
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HalluAudio: A Comprehensive Benchmark for Hallucination Detection in Large Audio-Language Models (2026.acl-long)

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Challenge: Existing studies on hallucination focus on text or vision, while few audio-oriented studies are limited in scale, modality coverage, and diagnostic depth.
Approach: They propose a large-scale benchmark for evaluating hallucinations across speech, sound, and music.
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