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New benchmark reveals LLMs struggle with complex logic instructions

A new research paper introduces LogicIFGen and LogicIFEval, a framework and benchmark designed to evaluate Large Language Models' (LLMs) ability to follow complex logic instructions. The LogicIFGen framework automates the generation of verifiable instructions from code functions, incorporating intricate logic such as conditions, loops, and function calls. Experiments using the curated LogicIFEval benchmark, which contains 426 such instructions, reveal that current state-of-the-art LLMs struggle significantly, correctly following fewer than 60% of the logic-rich instructions. This highlights a notable deficiency in the instruction-following capabilities of existing LLMs when faced with complex logical structures. AI

IMPACT Highlights significant limitations in LLM reasoning and instruction-following for complex logical tasks, indicating areas for future model development.

RANK_REASON Research paper introducing a new benchmark and framework for evaluating LLM instruction following. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.CL →

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New benchmark reveals LLMs struggle with complex logic instructions

COVERAGE [1]

  1. arXiv cs.CL TIER_1 English(EN) · Mian Zhang, Shujian Liu, Sixun Dong, Ming Yin, Yebowen Hu, Xun Wang, Simin Ma, Song Wang, Sathish Reddy Indurthi, Haoyun Deng, Zhiyu Zoey Chen, Kaiqiang Song ·

    LogicIF: Towards Complex Logic Instruction Following

    arXiv:2508.09125v3 Announce Type: replace Abstract: Instruction following has catalyzed the recent era of Large Language Models (LLMs) and is the foundational skill underpinning more advanced capabilities such as reasoning and agentic behaviors. As tasks grow more challenging, th…