> ## 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.

# ModelSamplingDiscrete - ComfyUI Built-in Node Documentation

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

This node is designed to modify the sampling behavior of a model by applying a discrete sampling strategy. It allows for the selection of different sampling methods, such as epsilon, v\_prediction, lcm, or x0, and optionally adjusts the model's noise reduction strategy based on the zero-shot noise ratio (zsnr) setting.

## Inputs

| Parameter  | Data Type      | Python dtype      | Description                                                                                                                                                                                      |
| ---------- | -------------- | ----------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `model`    | MODEL          | `torch.nn.Module` | The model to which the discrete sampling strategy will be applied. This parameter is crucial as it defines the base model that will undergo modification.                                        |
| `sampling` | COMBO\[STRING] | `str`             | Specifies the discrete sampling method to be applied to the model. The choice of method affects how the model generates samples, offering different strategies for sampling.                     |
| `zsnr`     | `BOOLEAN`      | `bool`            | A boolean flag that, when enabled, adjusts the model's noise reduction strategy based on the zero-shot noise ratio. This can influence the quality and characteristics of the generated samples. |

## Outputs

| Parameter | Data Type | Python dtype      | Description                                                                                                                                                |
| --------- | --------- | ----------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `model`   | MODEL     | `torch.nn.Module` | The modified model with the applied discrete sampling strategy. This model is now equipped to generate samples using the specified method and adjustments. |