Models

What is

Fine Tuning?

Reviewed
July 14, 2026
Sources
1 authoritative reference

Definition

Fine tuning adapts a pretrained model to a narrower task or style using additional examples.

01

Why Fine Tuning matters at work

Fine-tuning can adapt behavior or task performance, but it is not the default fix for missing current knowledge. Teams should compare prompting, retrieval, and fine-tuning on the same evaluation set and account for training data quality and maintenance.

02

A practical workplace example

Example

A company fine-tunes a smaller model on reviewed classification examples after prompt-only performance plateaus, while policy facts remain in a retrieved knowledge source.

03

What teams should evaluate

  1. 01

    Compare quality, latency, context limits, reliability, and total operating cost on the same representative evaluation set.

  2. 02

    Record the model, tokenizer, configuration, and version used so a result can be reproduced and changes can be investigated.

  3. 03

    Review data rights, privacy requirements, security boundaries, and provider retention policies before sending workplace information.

04

Frequently asked questions

What is Fine Tuning in simple terms?

Fine tuning adapts a pretrained model to a narrower task or style using additional examples.

Why does Fine Tuning matter for teams using AI?

Fine-tuning can adapt behavior or task performance, but it is not the default fix for missing current knowledge. Teams should compare prompting, retrieval, and fine-tuning on the same evaluation set and account for training data quality and maintenance.

What is a practical example of Fine Tuning?

A company fine-tunes a smaller model on reviewed classification examples after prompt-only performance plateaus, while policy facts remain in a retrieved knowledge source.

05

Sources and further reading

Luffy writes every definition in plain language and checks it against primary research or authoritative technical guidance. Source links open in a new tab.

Towards self-improving companies

Put your AI employee to work.