OpenAI published an updated Model Spec on October 29, 2026, reorganizing its public description of how it wants its models to behave around five values and adding guidance on context, oversight, and agency. The revision, announced on OpenAI’s site, also retires most of the Spec’s detailed style guidance. Five Values Organize the Spec The five values — faithfulness to human intent, harm minimization, honesty and transparency, human agency, and care — articulate broad commitments that OpenAI said…