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Monday, November 9, 2026Sources checked

Models & Research

OpenAI Updates Its Model Spec

By Zvi Mowshowitz, Don't Worry About the Vase

OpenAI Updates Its Model Spec

Picture: Don't Worry About the Vase

The Model Spec is potentially OpenAI’s most important document. It outlines what they aspire for the model to do, and how it should think. I’ve already covered a previous version in depth, so my strategy this time is to look at the diff. I had a Google Doc created for this purpose, and will be working from there. A bunch of things get moved around or reworded, often piecemeal. There are a lot of line edits, most of which are improvements. I’m focusing on what looks new and important. My main new critique is that many of the new examples do not carve reality at its joints, instead having overdetermined answers, and fail to teach the model or reader what the Spec wants them to do in actually difficult cases.

This report was first published by Don't Worry About the Vase. What you see here is a brief excerpt. The full text is theirs.

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