HalluTruthQA: A Fine-Grained Benchmark for Hallucination Detection, Localization, and Explanation in Arabic Question Answering

Summary

Researchers have introduced HalluTruthQA, a new fine-grained benchmark designed for hallucination detection, localization, and explanation in Arabic Question Answering. The benchmark comprises 2,400 expert-curated examples spanning four knowledge-intensive domains: Islamic knowledge, history, science, and geography, with detailed annotations including character-level erroneous spans and human-written explanations. Four open-source LLMs ( extsc{Allam}, extsc{Falcon-H1}, extsc{Qwen32}, and extsc{Silma}) were evaluated, demonstrating varied performance across detection, localization, factual verification, and explanation tasks. Why it matters: This benchmark offers a comprehensive tool for evaluating and enhancing the factual accuracy and trustworthiness of Arabic LLMs, promoting more sophisticated assessment beyond simple hallucination detection.