ModelMergeSD3_2B - ComfyUI Built-in Node Documentation - ComfyUI

The ModelMergeSD3_2B node allows you to merge two Stable Diffusion 3 2B models by blending their components with adjustable weights. It provides individual control over embedding layers and transformer blocks, enabling fine-tuned model combinations for specialized generation tasks.

Inputs

Parameter	Description	Data Type	Required	Range
`model1`	The first model to merge	MODEL	Yes	-
`model2`	The second model to merge	MODEL	Yes	-
`pos_embed.`	Position embedding interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`x_embedder.`	Input embedding interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`context_embedder.`	Context embedding interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`y_embedder.`	Y embedding interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`t_embedder.`	Time embedding interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.0.`	Joint block 0 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.1.`	Joint block 1 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.2.`	Joint block 2 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.3.`	Joint block 3 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.4.`	Joint block 4 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.5.`	Joint block 5 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.6.`	Joint block 6 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.7.`	Joint block 7 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.8.`	Joint block 8 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.9.`	Joint block 9 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.10.`	Joint block 10 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.11.`	Joint block 11 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.12.`	Joint block 12 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.13.`	Joint block 13 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.14.`	Joint block 14 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.15.`	Joint block 15 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.16.`	Joint block 16 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.17.`	Joint block 17 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.18.`	Joint block 18 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.19.`	Joint block 19 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.20.`	Joint block 20 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.21.`	Joint block 21 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.22.`	Joint block 22 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`joint_blocks.23.`	Joint block 23 interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0
`final_layer.`	Final layer interpolation weight (default: 1.0)	FLOAT	Yes	0.0 - 1.0

Outputs

Output Name	Description	Data Type
`model`	The merged model combining features from both input models	MODEL

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