The Model Spec specifies desired behavior for the models underlying OpenAI's products (including our APIs).

See the latest Model Spec rendered for human reading at model-spec.openai.com, read more about the Model Spec on the OpenAI Blog, or check out the latest Release Notes.

This repository contains the markdown source for the Model Spec and an archive of all released HTML versions of the Model Spec (starting from the second release on 2025-02-12).

The Model Spec is dedicated to the public domain and marked with the Creative Commons CC0 1.0 deed.