SpecEval: Evaluating Model Adherence to Behavior Specifications

Fuente: arXiv
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Main Authors: Ahmed, Ahmed, Klyman, Kevin, Zeng, Yi, Koyejo, Sanmi, Liang, Percy
Format: Preprint
Published: 2025
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author Ahmed, Ahmed
Klyman, Kevin
Zeng, Yi
Koyejo, Sanmi
Liang, Percy
author_facet Ahmed, Ahmed
Klyman, Kevin
Zeng, Yi
Koyejo, Sanmi
Liang, Percy
contents Companies that develop foundation models publish behavioral guidelines they pledge their models will follow, but it remains unclear if models actually do so. While providers such as OpenAI, Anthropic, and Google have published detailed specifications describing both desired safety constraints and qualitative traits for their models, there has been no systematic audit of adherence to these guidelines. We introduce an automated framework that audits models against their providers specifications by parsing behavioral statements, generating targeted prompts, and using models to judge adherence. Our central focus is on three way consistency between a provider specification, its model outputs, and its own models as judges; an extension of prior two way generator validator consistency. This establishes a necessary baseline: at minimum, a foundation model should consistently satisfy the developer behavioral specifications when judged by the developer evaluator models. We apply our framework to 16 models from six developers across more than 100 behavioral statements, finding systematic inconsistencies including compliance gaps of up to 20 percent across providers.
format Preprint
id arxiv_https___arxiv_org_abs_2509_02464
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle SpecEval: Evaluating Model Adherence to Behavior Specifications
Ahmed, Ahmed
Klyman, Kevin
Zeng, Yi
Koyejo, Sanmi
Liang, Percy
Computation and Language
Companies that develop foundation models publish behavioral guidelines they pledge their models will follow, but it remains unclear if models actually do so. While providers such as OpenAI, Anthropic, and Google have published detailed specifications describing both desired safety constraints and qualitative traits for their models, there has been no systematic audit of adherence to these guidelines. We introduce an automated framework that audits models against their providers specifications by parsing behavioral statements, generating targeted prompts, and using models to judge adherence. Our central focus is on three way consistency between a provider specification, its model outputs, and its own models as judges; an extension of prior two way generator validator consistency. This establishes a necessary baseline: at minimum, a foundation model should consistently satisfy the developer behavioral specifications when judged by the developer evaluator models. We apply our framework to 16 models from six developers across more than 100 behavioral statements, finding systematic inconsistencies including compliance gaps of up to 20 percent across providers.
title SpecEval: Evaluating Model Adherence to Behavior Specifications
topic Computation and Language
url https://arxiv.org/abs/2509.02464