The Hallucinations Leaderboard -- An Open Effort to Measure Hallucinations in Large Language Models
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Abstract (arXiv)
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 not align with factual reality or the input context. This paper introduces the Hallucinations Leaderboard, an open initiative to quantitatively measure and compare the tendency of each model to produce hallucinations. The leaderboard uses a comprehensive set of benchmarks focusing on different aspects of hallucinations, such as factuality and faithfulness, across various tasks, including question-answering, summarisation, and reading comprehension. Our analysis provides insights into the performance of different models, guiding researchers and practitioners in choosing the most reliable models for their applications.
Key facts. Cited by 17 papers in the map (data through 14 Oct 2026). Builds on 41 of its 58 references that are in the map. First posted on arXiv 8 Apr 2024.
Builds on
41 of 58 references.
References · 41
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Citing papers per year: 2024: 5; 2025: 10; 2026: 2.
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- 2024Logically Consistent Language Models via Neuro-Symbolic Integrationcited by 30
- 2024DeCoRe: Decoding by Contrasting Retrieval Heads to Mitigate Hallucinationscited by 25
- 2025Conformal Linguistic Calibration: Trading-off between Factuality and Specificitycited by 20
- 2025Malicious LLM-Based Conversational AI Makes Users Reveal Personal Informationcited by 13
- 2025MoE-CAP: Benchmarking Cost, Accuracy and Performance of Sparse Mixture-of-Experts Systemscited by 11
- 2024A Survey of Automatic Hallucination Evaluation on Natural Language Generationcited by 7
- 2025Self-Training Large Language Models for Tool-Use Without Demonstrationscited by 7
- 2025XtraGPT: Context-Aware and Controllable Academic Paper Revision via Human-AI Collaborationcited by 7
- 2025Beyond Prompt-Induced Lies: Investigating LLM Deception on Benign Promptscited by 5
- 2025SelfCheck-Eval: A Multi-Module Framework for Zero-Resource Hallucination Detection in Large Language Modelscited by 4
- 2024ViBe: A Text-to-Video Benchmark for Evaluating Hallucination in Large Multimodal Modelscited by 3
- 2025An Analysis of Decoding Methods for LLM-based Agents for Faithful Multi-Hop Question Answeringcited by 2
5 more
- 2025Neural Diversity Regularizes Hallucinations in Language Modelscited by 2
- 2026Rethinking Hallucinations: Correctness, Consistency, and Prompt Multiplicitycited by 2
- 2025Simulated Self-Assessment in Large Language Models: A Psychometric Approach to AI Self-Efficacycited by 1
- 2024MoE-CAP: Benchmarking Cost, Accuracy and Performance of Sparse Mixture-of-Experts Systemscited by 0
- 2026Rethinking Evaluation for LLM Hallucination Detection: A Desiderata, A New RAG-based Benchmark, New Insightscited by 0
- 2026Rethinking Evaluation for LLM Hallucination Detection: A Desiderata, A New RAG-based Benchmark, New Insights11 May 2026
- 2026Rethinking Hallucinations: Correctness, Consistency, and Prompt Multiplicity31 Jan 2026
- 2025Simulated Self-Assessment in Large Language Models: A Psychometric Approach to AI Self-Efficacy25 Nov 2025
- 2025Neural Diversity Regularizes Hallucinations in Language Models23 Oct 2025
- 2025Beyond Prompt-Induced Lies: Investigating LLM Deception on Benign Prompts8 Aug 2025
- 2025Malicious LLM-Based Conversational AI Makes Users Reveal Personal Information13 Jun 2025
- 2025MoE-CAP: Benchmarking Cost, Accuracy and Performance of Sparse Mixture-of-Experts Systems16 May 2025
- 2025XtraGPT: Context-Aware and Controllable Academic Paper Revision via Human-AI Collaboration16 May 2025
- 2025An Analysis of Decoding Methods for LLM-based Agents for Faithful Multi-Hop Question Answering30 Mar 2025
- 2025Conformal Linguistic Calibration: Trading-off between Factuality and Specificity26 Feb 2025
- 2025Self-Training Large Language Models for Tool-Use Without Demonstrations9 Feb 2025
- 2025SelfCheck-Eval: A Multi-Module Framework for Zero-Resource Hallucination Detection in Large Language Models3 Feb 2025
5 more
- 2024MoE-CAP: Benchmarking Cost, Accuracy and Performance of Sparse Mixture-of-Experts Systems10 Dec 2024
- 2024ViBe: A Text-to-Video Benchmark for Evaluating Hallucination in Large Multimodal Models16 Nov 2024
- 2024DeCoRe: Decoding by Contrasting Retrieval Heads to Mitigate Hallucinations24 Oct 2024
- 2024Logically Consistent Language Models via Neuro-Symbolic Integration9 Sep 2024
- 2024A Survey of Automatic Hallucination Evaluation on Natural Language Generation18 Apr 2024
- 2025Self-Training Large Language Models for Tool-Use Without Demonstrationscited by 7
- 2025Beyond Prompt-Induced Lies: Investigating LLM Deception on Benign Promptscited by 5
- 2026Rethinking Hallucinations: Correctness, Consistency, and Prompt Multiplicitycited by 2
- 2026Rethinking Evaluation for LLM Hallucination Detection: A Desiderata, A New RAG-based Benchmark, New Insightscited by 0
- 2026Rethinking Evaluation for LLM Hallucination Detection: A Desiderata, A New RAG-based Benchmark, New Insights11 May 2026
- 2026Rethinking Hallucinations: Correctness, Consistency, and Prompt Multiplicity31 Jan 2026
- 2025Beyond Prompt-Induced Lies: Investigating LLM Deception on Benign Prompts8 Aug 2025
- 2025Self-Training Large Language Models for Tool-Use Without Demonstrations9 Feb 2025
- 2024Logically Consistent Language Models via Neuro-Symbolic Integrationcited by 30
- 2024DeCoRe: Decoding by Contrasting Retrieval Heads to Mitigate Hallucinationscited by 25
- 2025Conformal Linguistic Calibration: Trading-off between Factuality and Specificitycited by 20
- 2025Malicious LLM-Based Conversational AI Makes Users Reveal Personal Informationcited by 13
- 2024A Survey of Automatic Hallucination Evaluation on Natural Language Generationcited by 7
- 2025XtraGPT: Context-Aware and Controllable Academic Paper Revision via Human-AI Collaborationcited by 7
- 2025SelfCheck-Eval: A Multi-Module Framework for Zero-Resource Hallucination Detection in Large Language Modelscited by 4
- 2025Neural Diversity Regularizes Hallucinations in Language Modelscited by 2
- 2025Simulated Self-Assessment in Large Language Models: A Psychometric Approach to AI Self-Efficacycited by 1
- 2025Simulated Self-Assessment in Large Language Models: A Psychometric Approach to AI Self-Efficacy25 Nov 2025
- 2025Neural Diversity Regularizes Hallucinations in Language Models23 Oct 2025
- 2025Malicious LLM-Based Conversational AI Makes Users Reveal Personal Information13 Jun 2025
- 2025XtraGPT: Context-Aware and Controllable Academic Paper Revision via Human-AI Collaboration16 May 2025
- 2025Conformal Linguistic Calibration: Trading-off between Factuality and Specificity26 Feb 2025
- 2025SelfCheck-Eval: A Multi-Module Framework for Zero-Resource Hallucination Detection in Large Language Models3 Feb 2025
- 2024DeCoRe: Decoding by Contrasting Retrieval Heads to Mitigate Hallucinations24 Oct 2024
- 2024Logically Consistent Language Models via Neuro-Symbolic Integration9 Sep 2024
- 2024A Survey of Automatic Hallucination Evaluation on Natural Language Generation18 Apr 2024