ResearchResearch paperReasoning & Planning · Large Language Models1 source · Oct 15, 2026

Are Large Reasoning Models Good Everyday Reasoners? A Comparison with Non-Reasoning Models on Logical Reasoning Tasks

In this work, we systematically evaluate how well reasoning models align with everyday reasoning patterns by introducing a benchmark based on linguistic and pragmatic reasoning phenomena.

Key points

  • Large reasoning models (LRMs) that leverage test-time computation achieve strong performance on mathematical and scientific benchmarks and are increasingly deployed in real-world applications.
  • However, their ability to perform everyday logical reasoning, which often departs from textbook formal logic, remains underexplored.
  • We also compare reasoning models with non-reasoning models under controlled prompting conditions.
  • We find that, in many cases, (1) reasoning models show degraded performance in everyday reasoning when such reasoning deviates from formal logical rules, (2) some non-reasoning models with chain-of-thought prompting outperform comparable reasoning models in everyday reasoning, and (3) prompting with additional instructions provides limited control over reasoning behavior.

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