Decoder. plain-English AI glossary

Probability distribution

● Core

A spread of chances across all the options — how the model splits its confidence over every possible next token.

Think of it like

A weighted die: not every face equally likely, and the weights tell you where the model’s leaning.

Example

After “The sky is”, the model might put 60% on “blue”, 10% on “clear”, and thin slices on thousands of others.

How it actually works

At each step the model outputs a number for every token in its vocabulary, then softmax turns those into probabilities that sum to one. Sampling picks from this distribution. Temperature and top-p are just knobs that reshape it before the pick.

For product teams

The model rarely “knows” one answer — it holds a spread, and your settings decide how boldly it commits.

For engineers

The softmax output over the vocabulary; the categorical distribution sampled at each decode step.

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