Evaluating Reasoning Models for Queries with Presuppositions

Fuente: arXiv
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Autores principales: Sathyanathan, Rose, Vasisht, Kinshuk, Pruthi, Danish
Formato: Preprint
Publicado: 2026
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author Sathyanathan, Rose
Vasisht, Kinshuk
Pruthi, Danish
author_facet Sathyanathan, Rose
Vasisht, Kinshuk
Pruthi, Danish
contents Millions of users turn to AI models for their information needs. It is conceivable that a large number of user queries contain assumptions that may be factually inaccurate. Prior work notes that large language models (LLMs) often fail to challenge such erroneous assumptions, and can reinforce users' misinformed opinions. However, given the recent advances, especially in model's reasoning capabilities, we revisit whether large reasoning models (LRMs) can reason about the underlying assumptions and respond to user queries appropriately. We construct queries with varying degrees of presuppositions spanning health, science, and general knowledge, and use it to evaluate several widely-deployed models When compared to non-reasoning models, we find that reasoning models achieve a slightly higher accuracy (2-11%), but they still fail to challenge a large fraction (26-42%) of false presuppositions. Further, reasoning models remain susceptible to how strongly the presupposition is expressed.
format Preprint
id arxiv_https___arxiv_org_abs_2605_03050
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Evaluating Reasoning Models for Queries with Presuppositions
Sathyanathan, Rose
Vasisht, Kinshuk
Pruthi, Danish
Computation and Language
Millions of users turn to AI models for their information needs. It is conceivable that a large number of user queries contain assumptions that may be factually inaccurate. Prior work notes that large language models (LLMs) often fail to challenge such erroneous assumptions, and can reinforce users' misinformed opinions. However, given the recent advances, especially in model's reasoning capabilities, we revisit whether large reasoning models (LRMs) can reason about the underlying assumptions and respond to user queries appropriately. We construct queries with varying degrees of presuppositions spanning health, science, and general knowledge, and use it to evaluate several widely-deployed models When compared to non-reasoning models, we find that reasoning models achieve a slightly higher accuracy (2-11%), but they still fail to challenge a large fraction (26-42%) of false presuppositions. Further, reasoning models remain susceptible to how strongly the presupposition is expressed.
title Evaluating Reasoning Models for Queries with Presuppositions
topic Computation and Language
url https://arxiv.org/abs/2605.03050