Decoder. plain-English AI glossary

Distillation

● Core

Compressing a big model’s know-how into a smaller one that mimics its behavior.

Think of it like

Like boiling a rich stock down to a concentrated cube — far smaller, most of the flavor kept.

Example

A large model’s answers train a compact model that runs ten times faster while behaving nearly the same on everyday tasks.

How it actually works

Distillation trains a small student to reproduce a large teacher’s outputs — its predictions or full probability distributions — packing more signal into fewer parameters than training from scratch. The payoff is speed, cost, and on-device deployment; the ceiling is the teacher, whose mistakes and biases the student inherits. It’s the standard bridge from a frontier model to a shippable small one.

For product teams

How you turn an expensive model into a cheap, fast one that’s good enough for most requests.

For engineers

Train a compact student to match a teacher’s outputs/soft targets; smaller and faster, capped by the teacher.

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