> ## Documentation Index
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> Use this file to discover all available pages before exploring further.

# SamplerSEEDS2 - ComfyUI Built-in Node Documentation

> Complete documentation for the SamplerSEEDS2 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/SamplerSEEDS2/en.md)

This node provides a configurable sampler for generating images. It implements the SEEDS-2 algorithm, which is a stochastic differential equation (SDE) solver. By adjusting its parameters, you can configure it to behave like several specific samplers, including `seeds_2`, `exp_heun_2_x0`, and `exp_heun_2_x0_sde`.

## Inputs

| Parameter     | Data Type | Required | Range                    | Description                                                             |
| ------------- | --------- | -------- | ------------------------ | ----------------------------------------------------------------------- |
| `solver_type` | COMBO     | Yes      | `"phi_1"`<br />`"phi_2"` | Selects the underlying solver algorithm for the sampler.                |
| `eta`         | FLOAT     | No       | 0.0 - 100.0              | Stochastic strength (default: 1.0).                                     |
| `s_noise`     | FLOAT     | No       | 0.0 - 100.0              | SDE noise multiplier (default: 1.0).                                    |
| `r`           | FLOAT     | No       | 0.01 - 1.0               | Relative step size for the intermediate stage (c2 node) (default: 0.5). |

## Outputs

| Output Name | Data Type | Description                                                             |
| ----------- | --------- | ----------------------------------------------------------------------- |
| `sampler`   | SAMPLER   | A configured sampler object that can be passed to other sampling nodes. |