> ## Documentation Index
> Fetch the complete documentation index at: https://docs.comfy.org/llms.txt
> Use this file to discover all available pages before exploring further.

# ModelMergeSD3_2B - ComfyUI Built-in Node Documentation

> Complete documentation for the ModelMergeSD3_2B node in ComfyUI. Learn its inputs, outputs, parameters and usage.

> This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! [Edit on GitHub](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/ModelMergeSD3_2B/en.md)

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

## Outputs

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