[3][4] It uses Stable Diffusion as the base model for its image capabilities as well as a collection of default settings and prompts to make the image generation process more streamlined.

[10] Fooocus' main feature is that it is easy to set up and does not require users to manually configure model parameters to achieve desirable results.

[6][3][11][12] According to the project, it uses GPT-2 to automatically add more detail to the user's prompts.

[13] It includes common extensions such LCM low-rank adaptation by default which allows for faster generation speed.

[3][15] While Fooocus aims to provide good results out of the box, it also includes an "advanced" tab that allows for user customization.