What is the difference between a seed image and a reference image?

Some AI models allow you to guide generation using an existing image. Depending on the model, the image may be used either as a seed image or a reference image.

Seed image

A seed image is used as the starting point for generation. The AI transforms the image directly, meaning the structure and layout of the original image carry over into the result.

Examples of models that support seed images include:

• Flux 1 dev

• Z-image-turbo

In simple terms:
Seed image = start from this image

Reference image

A reference image is used for inspiration rather than as the base for generation. The AI may adopt elements such as style, mood, or colors, but it does not build directly on top of the image.

Examples of models that support reference images include:

• Nanobanana

• Flux 2

In simple terms:
Reference image = inspired by this image

Kindly refer to the model documentation to confirm the parameter it uses.