> ## 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.

# LTXVScheduler - ComfyUI Built-in Node Documentation

> The LTXVScheduler node generates sigma values for a custom sampling process.

The LTXVScheduler node generates sigma values for a custom sampling process. It calculates the noise schedule from the number of tokens in the provided latent, or uses a default of 4096 tokens when no latent is connected, and can optionally stretch the sigma values so the final value matches the specified `terminal` value.

## Inputs

| Parameter | Description | Data Type | Required | Range |
| - | - | - | - | - |
| `steps` | Number of sampling steps (default: 20) | INT | Yes | 1-10000 |
| `max_shift` | Maximum shift value used in the sigma calculation (default: 2.05) | FLOAT | Yes | 0.0-100.0 (step: 0.01) |
| `base_shift` | Base shift value used in the sigma calculation (default: 0.95) | FLOAT | Yes | 0.0-100.0 (step: 0.01) |
| `stretch` | Stretch the sigmas to be in the range \[terminal, 1] (default: True) | BOOLEAN | Yes | True/False |
| `terminal` | The terminal value of the sigmas after stretching (default: 0.1). Used only when `stretch` is enabled. | FLOAT | Yes | 0.0-0.99 (step: 0.01) |
| `latent` | Optional latent input used to calculate the token count for sigma adjustment. When not provided, a default token count of 4096 is used. | LATENT | No | - |

**Note:** When `stretch` is enabled, the non-zero sigma values are rescaled so that the last non-zero sigma equals the `terminal` value.

## Outputs

| Output Name | Description | Data Type |
| - | - | - |
| `sigmas` | Sigma values generated for the sampling process | 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/LTXVScheduler/en.md)

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