> ## 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.

# ConditioningConcat - ComfyUI Built-in Node Documentation

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

The ConditioningConcat node is designed to concatenate conditioning vectors, specifically merging the 'conditioning\_from' vector into the 'conditioning\_to' vector. This operation is fundamental in scenarios where the conditioning information from two sources needs to be combined into a single, unified representation.

## Inputs

| Parameter           | Comfy dtype    | Description                                                                                                                                                                                           |
| ------------------- | -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `conditioning_to`   | `CONDITIONING` | Represents the primary set of conditioning vectors to which the 'conditioning\_from' vectors will be concatenated. It serves as the base for the concatenation process.                               |
| `conditioning_from` | `CONDITIONING` | Consists of conditioning vectors that are to be concatenated to the 'conditioning\_to' vectors. This parameter allows for additional conditioning information to be integrated into the existing set. |

## Outputs

| Parameter      | Comfy dtype    | Description                                                                                                                                                |
| -------------- | -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `conditioning` | `CONDITIONING` | The output is a unified set of conditioning vectors, resulting from the concatenation of 'conditioning\_from' vectors into the 'conditioning\_to' vectors. |