SRBench: A Comprehensive Benchmark for Sequential Recommendation with Large Language Models

• URL: http://arxiv.org/abs/2604.09553v1
• Date: Sat, 31 Jan 2026 04:22:58 GMT
• Title: SRBench: A Comprehensive Benchmark for Sequential Recommendation with Large Language Models
• Abstract summary: We propose SRBench, a comprehensive SR benchmark with three core designs.<n>It covers accuracy, fairness, stability and efficiency, aligned with practical demands.<n>We have used SRBench to evaluate 13 mainstream models and discovered some meaningful insights.
• Score: 23.784121184487827
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: LLM development has aroused great interest in Sequential Recommendation (SR) applications. However, comprehensive evaluation of SR models remains lacking due to the limitations of the existing benchmarks: 1) an overemphasis on accuracy, ignoring other real-world demands (e.g., fairness); 2) existing datasets fail to unleash LLMs' potential, leading to unfair comparison between Neural-Network-based SR (NN-SR) models and LLM-based SR (LLM-SR) models; and 3) no reliable mechanism for extracting task-specific answers from unstructured LLM outputs. To address these limitations, we propose SRBench, a comprehensive SR benchmark with three core designs: 1) a multi-dimensional framework covering accuracy, fairness, stability and efficiency, aligned with practical demands; 2) a unified input paradigm via prompt engineering to boost LLM-SR performance and enable fair comparisons between models; 3) a novel prompt-extractor-coupled extraction mechanism, which captures answers from LLM outputs through prompt-enforced output formatting and a numeric-oriented extractor. We have used SRBench to evaluate 13 mainstream models and discovered some meaningful insights (e.g., LLM-SR models overfocus on item popularity but lack deep understanding of item quality). Concisely, SRBench enables fair and comprehensive assessments for SR models, underpinning future research and practical application.

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