> ## Documentation Index
> Fetch the complete documentation index at: https://dripart-feat-openapi-i18n.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# KarrasScheduler - ComfyUI Built-in Node Documentation

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

The KarrasScheduler node is designed to generate a sequence of noise levels (sigmas) based on the Karras et al. (2022) noise schedule. This scheduler is useful for controlling the diffusion process in generative models, allowing for fine-tuned adjustments to the noise levels applied at each step of the generation process.

## Inputs

| Parameter   | Description                                                                                                                           | Data Type |
| ----------- | ------------------------------------------------------------------------------------------------------------------------------------- | --------- |
| `steps`     | Specifies the number of steps in the noise schedule, affecting the granularity of the generated sigmas sequence.                      | INT       |
| `sigma_max` | The maximum sigma value in the noise schedule, setting the upper bound of noise levels.                                               | FLOAT     |
| `sigma_min` | The minimum sigma value in the noise schedule, setting the lower bound of noise levels.                                               | FLOAT     |
| `rho`       | A parameter that controls the shape of the noise schedule curve, influencing how noise levels progress from sigma\_min to sigma\_max. | FLOAT     |

## Outputs

| Parameter | Description                                                                                        | Data Type |
| --------- | -------------------------------------------------------------------------------------------------- | --------- |
| `sigmas`  | The generated sequence of noise levels (sigmas) following the Karras et al. (2022) noise schedule. | SIGMAS    |

> 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/KarrasScheduler/en.md)