> ## 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

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

The LTXVScheduler node generates sigma values for custom sampling processes. It calculates noise schedule parameters based on the number of tokens in the input latent and applies a sigmoid transformation to create the sampling schedule. The node can optionally stretch the resulting sigmas to match a specified terminal value.

## Inputs

| Parameter    | Data Type | Required | Range      | Description                                                              |
| ------------ | --------- | -------- | ---------- | ------------------------------------------------------------------------ |
| `steps`      | INT       | Yes      | 1-10000    | Number of sampling steps (default: 20)                                   |
| `max_shift`  | FLOAT     | Yes      | 0.0-100.0  | Maximum shift value for sigma calculation (default: 2.05)                |
| `base_shift` | FLOAT     | Yes      | 0.0-100.0  | Base shift value for sigma calculation (default: 0.95)                   |
| `stretch`    | BOOLEAN   | Yes      | True/False | Stretch the sigmas to be in the range \[terminal, 1] (default: True)     |
| `terminal`   | FLOAT     | Yes      | 0.0-0.99   | The terminal value of the sigmas after stretching (default: 0.1)         |
| `latent`     | LATENT    | No       | -          | Optional latent input used to calculate token count for sigma adjustment |

**Note:** The `latent` parameter is optional. When not provided, the node uses a default token count of 4096 for calculations.

## Outputs

| Output Name | Data Type | Description                                     |
| ----------- | --------- | ----------------------------------------------- |
| `sigmas`    | SIGMAS    | Generated sigma values for the sampling process |