Decoder. plain-English AI glossary

Student model

● Core

A smaller model trained to imitate a bigger one, keeping much of the skill at a fraction of the cost.

Think of it like

Like an apprentice who studies the master’s work and reproduces most of it with far less overhead.

Example

A compact chatbot trained on a large model’s answers runs on a single GPU while staying close in quality on everyday requests.

How it actually works

The student learns from a teacher’s outputs rather than raw data alone, which packs more signal into fewer examples. Done well, it retains most capability while shrinking dramatically — but it can’t exceed the teacher, and it copies the teacher’s errors and gaps as faithfully as its strengths.

For product teams

The practical path to cheap, fast models that still feel smart on common tasks.

For engineers

The target model in distillation, optimized to match a teacher’s outputs at reduced parameter count.

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