OpenAI reorganizes its Model Spec around five values

On Oct. 29, 2026 OpenAI published a revised Model Spec organized around faithfulness to human intent, harm minimization, honesty and transparency, human agency, and care. The revision adds guidance on context, oversight, and agency, retires most detailed style rules, and refers to the model as GPT rather than the assistant. OpenAI says the spec describes intended behavior and that current models do not yet fully reflect it.

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