decision model

A decision model is an AI model designed to evaluate an input and either select one of a fixed set of options or return a calibrated probability for each option. It handles judgment tasks whose answer format is set in advance, such as yes-or-no checks, multiple-choice classification and scoring, which distinguishes it from large language models that generate long text.

Because its output is short, it tends to respond faster and cost less to run than generative models, so it is used for steps in multi-stage AI systems that only require a judgment. In management and related fields, the term can also mean a model that represents a decision-making process with equations or diagrams.

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