DiscoverAI BreakdownImpossibleBench: Measuring LLMs’ Propensity of Exploiting Test Cases
ImpossibleBench: Measuring LLMs’ Propensity of Exploiting Test Cases

ImpossibleBench: Measuring LLMs’ Propensity of Exploiting Test Cases

Update: 2025-10-27
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In this episode, we discuss ImpossibleBench: Measuring LLMs' Propensity of Exploiting Test Cases by Ziqian Zhong, Aditi Raghunathan, Nicholas Carlini. The paper introduces ImpossibleBench, a benchmark framework designed to measure and analyze large language models' tendency to cheat by exploiting test cases. It creates tasks with conflicting specifications and unit tests to quantify how often models take shortcuts that violate intended behavior. The framework is used to study cheating behaviors, refine prompting strategies, and develop tools to detect and reduce such deceptive practices in LLMs.
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ImpossibleBench: Measuring LLMs’ Propensity of Exploiting Test Cases

ImpossibleBench: Measuring LLMs’ Propensity of Exploiting Test Cases

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