PerpNeg - ComfyUI Built-in Node Documentation

Complete documentation for the PerpNeg node in ComfyUI. Learn its inputs, outputs, parameters and usage.

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The PerpNeg node applies perpendicular negative guidance to a model’s sampling process. This node modifies the model’s configuration function to adjust noise predictions using negative conditioning and scaling factors. It has been deprecated and replaced by the PerpNegGuider node for improved functionality.

Inputs

Parameter	Data Type	Required	Range	Description
model	MODEL	Yes	-	The model to apply perpendicular negative guidance to
empty_conditioning	CONDITIONING	Yes	-	Empty conditioning used for negative guidance calculations
neg_scale	FLOAT	No	0.0 - 100.0	Scaling factor for negative guidance (default: 1.0)

Outputs

Output Name	Data Type	Description
model	MODEL	The modified model with perpendicular negative guidance applied

Note: This node is deprecated and has been replaced by PerpNegGuider. It is marked as experimental and should not be used in production workflows.