What does CFG scale control in Stable Diffusion?
Asked on Sep 05, 2025
Answer
In Stable Diffusion, the CFG (Classifier-Free Guidance) scale controls the trade-off between adhering to the prompt and the inherent randomness of the image generation process. A higher CFG scale makes the generated image more closely follow the prompt, while a lower scale allows for more creative freedom and variation.
Example Concept: The CFG scale in Stable Diffusion adjusts how strongly the model adheres to the text prompt versus exploring creative possibilities. A higher CFG scale (e.g., 10-15) results in images that are more faithful to the prompt, whereas a lower scale (e.g., 5-7) allows for more diverse and unexpected outputs.
Additional Comment:
- CFG scale is an important parameter for balancing prompt accuracy and creative exploration.
- Experimenting with different CFG scales can help achieve the desired level of detail and creativity in the output.
- Adjusting the CFG scale is often done through the settings in the Stable Diffusion interface or via API calls.
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