Glossary

CFG Scale

Short answer

The setting controlling how closely the model adheres to the prompt.

At a low CFG the model reads the prompt loosely, giving more creative results further from your brief. At a high value it binds tightly to the prompt but the image starts to look saturated, harsh and artificial.

For most models the 6 to 9 range is balanced. Values above 12 usually degrade the image.

A high CFG does nothing with a short prompt — there is not enough information to bind to. With long, detailed prompts a higher value can make sense.