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Main Authors: He, Xingwei, Zhang, Qianru, Chen, Pengfei, Chen, Guanhua, Yu, Linlin, Yuan, Yuan, Yiu, Siu-Ming
Format: Preprint
Published: 2025
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Online Access:https://arxiv.org/abs/2511.14342
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author He, Xingwei
Zhang, Qianru
Chen, Pengfei
Chen, Guanhua
Yu, Linlin
Yuan, Yuan
Yiu, Siu-Ming
author_facet He, Xingwei
Zhang, Qianru
Chen, Pengfei
Chen, Guanhua
Yu, Linlin
Yuan, Yuan
Yiu, Siu-Ming
contents Instruction-following is a critical capability of Large Language Models (LLMs). While existing works primarily focus on assessing how well LLMs adhere to user instructions, they often overlook scenarios where instructions contain conflicting constraints-a common occurrence in complex prompts. The behavior of LLMs under such conditions remains under-explored. To bridge this gap, we introduce ConInstruct, a benchmark specifically designed to assess LLMs' ability to detect and resolve conflicts within user instructions. Using this dataset, we evaluate LLMs' conflict detection performance and analyze their conflict resolution behavior. Our experiments reveal two key findings: (1) Most proprietary LLMs exhibit strong conflict detection capabilities, whereas among open-source models, only DeepSeek-R1 demonstrates similarly strong performance. DeepSeek-R1 and Claude-4.5-Sonnet achieve the highest average F1-scores at 91.5% and 87.3%, respectively, ranking first and second overall. (2) Despite their strong conflict detection abilities, LLMs rarely explicitly notify users about the conflicts or request clarification when faced with conflicting constraints. These results underscore a critical shortcoming in current LLMs and highlight an important area for future improvement when designing instruction-following LLMs.
format Preprint
id arxiv_https___arxiv_org_abs_2511_14342
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle ConInstruct: Evaluating Large Language Models on Conflict Detection and Resolution in Instructions
He, Xingwei
Zhang, Qianru
Chen, Pengfei
Chen, Guanhua
Yu, Linlin
Yuan, Yuan
Yiu, Siu-Ming
Computation and Language
Instruction-following is a critical capability of Large Language Models (LLMs). While existing works primarily focus on assessing how well LLMs adhere to user instructions, they often overlook scenarios where instructions contain conflicting constraints-a common occurrence in complex prompts. The behavior of LLMs under such conditions remains under-explored. To bridge this gap, we introduce ConInstruct, a benchmark specifically designed to assess LLMs' ability to detect and resolve conflicts within user instructions. Using this dataset, we evaluate LLMs' conflict detection performance and analyze their conflict resolution behavior. Our experiments reveal two key findings: (1) Most proprietary LLMs exhibit strong conflict detection capabilities, whereas among open-source models, only DeepSeek-R1 demonstrates similarly strong performance. DeepSeek-R1 and Claude-4.5-Sonnet achieve the highest average F1-scores at 91.5% and 87.3%, respectively, ranking first and second overall. (2) Despite their strong conflict detection abilities, LLMs rarely explicitly notify users about the conflicts or request clarification when faced with conflicting constraints. These results underscore a critical shortcoming in current LLMs and highlight an important area for future improvement when designing instruction-following LLMs.
title ConInstruct: Evaluating Large Language Models on Conflict Detection and Resolution in Instructions
topic Computation and Language
url https://arxiv.org/abs/2511.14342