Level 3Lesson 9 of 11 15 minutes

Retrieval vs Fine-Tuning

Choose the right way to customize AI with company knowledge.

What you will learn

  • Explain retrieval vs fine-tuning in clear language.
  • Recognise where this concept appears in real work.
  • Apply the idea and check the result using a practical activity.

The concept

Retrieval gives a model relevant information at runtime. Fine-tuning changes model behavior through training examples. Retrieval is usually better for fresh facts and private knowledge; fine-tuning is better for repeatable style or specialized behavior.

In plain English

Retrieval is like giving AI the right textbook page before it answers. Fine-tuning is like training it to answer in a certain style.

Work example

A company policy assistant should usually retrieve current policy documents rather than fine-tune on old copies.

Try it yourself

Activity

For one company use case, decide whether it needs retrieval, fine-tuning, or both. Explain why.

Knowledge check

Which use case is usually best suited for retrieval?

  1. A.Answering from changing internal policy documents
  2. B.Making every answer rhyme
  3. C.Changing the model's base language
  4. D.Removing the need for source documents
Show answer

A. Answering from changing internal policy documents

Retrieval keeps answers grounded in current documents.