> ## Documentation Index
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# BetaSamplingScheduler - ComfyUI Built-in Node Documentation

> Complete documentation for the BetaSamplingScheduler 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/BetaSamplingScheduler/en.md)

The BetaSamplingScheduler node generates a sequence of noise levels (sigmas) for the sampling process using a beta scheduling algorithm. It takes a model and configuration parameters to create a customized noise schedule that controls the denoising process during image generation. This scheduler allows fine-tuning of the noise reduction trajectory through alpha and beta parameters.

## Inputs

| Parameter | Data Type | Input Type | Default | Range    | Description                                                              |
| --------- | --------- | ---------- | ------- | -------- | ------------------------------------------------------------------------ |
| `model`   | MODEL     | Required   | -       | -        | The model used for sampling, which provides the model sampling object    |
| `steps`   | INT       | Required   | 20      | 1-10000  | The number of sampling steps to generate sigmas for                      |
| `alpha`   | FLOAT     | Required   | 0.6     | 0.0-50.0 | Alpha parameter for the beta scheduler, controlling the scheduling curve |
| `beta`    | FLOAT     | Required   | 0.6     | 0.0-50.0 | Beta parameter for the beta scheduler, controlling the scheduling curve  |

## Outputs

| Output Name | Data Type | Description                                                       |
| ----------- | --------- | ----------------------------------------------------------------- |
| `SIGMAS`    | SIGMAS    | A sequence of noise levels (sigmas) used for the sampling process |