Equation 7 · OpenAI Model Systems from First Principles: Weights, Post-Training, and Inference Compute
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Read the formula alongside the article passage below. Each part has a deeper page with its role in the equation, the supporting passage and nearby citations.
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Symbol x
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What the article says around this equation
That single API field breaks a habit of thought. “GPT-5.6 scores x ” is not a statement about a model. It is a statement about a model at a chosen reasoning effort , under a particular prompt, decoding configuration, and evaluation harness. The quantity being reported is a function evaluated at a point, and the point is usually unstated.
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