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August 18, 2026 — Updates to the OpenAI Model Spec

ChatGPT
We’ve updated the Model Spec, our living document outlining intended model behavior.
This update adds additional clarity around principles on appropriate relational interactions for teens. It also clarifies how assistants should handle false or unsupported premises, removes outdated guidance for pre-reasoning models, adds a new section "Be clear about capabilities and limits", and makes a few other small changes and copy edits.
More information on our principles related to teens can be found in ourChatGPT for Teensblog post, and the latest version of the Model Spec is available atmodel-spec.openai.com.
Original source ↗ Crawled: 14 Nov 2026 09:13