> For the complete documentation index, see [llms.txt](https://docs.m-xr.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.m-xr.com/marso-studio/reference/nodes-reference.md).

# Nodes reference

Marso Studio is built around **nodes**. Each node is one step — generate or load an asset, generate or edit an image, apply materials. Connect a node's output to the next node's input to build a pipeline, or start from a **template** that wires a pipeline up for you.

Nodes are grouped into **Image**, **3D**, **Utility** and **Templates**.

### Image

#### Image Upload

Upload an image to use as a starting point in your pipeline.

* **Input:** image file
* **Output:** image
* **Cost:** no credits

#### Image Generation

Generate an image from a text prompt.

* **Input:** text prompt
* **Output:** image
* **Cost:** 1 credit

#### Multiview

Generate a multi-view set of an object from a single image — useful for a stronger 3D reconstruction.

* **Input:** image
* **Output:** multiple views of the object
* **Cost:** 4 credits

#### Image Edit

Edit or refine an existing image with a prompt.

* **Input:** image + prompt
* **Output:** edited image
* **Cost:** 1 credit

### 3D

#### Load 3D Model

Upload your own 3D asset (`.glb`, `.usdz` or `.fbx`). See [3D file support](/marso-studio/preparing-your-assets/3d-file-support.md).

* **Input:** 3D file
* **Output:** 3D model
* **Cost:** no credits

#### Generate 3D Model

Turn an image into a 3D mesh.

* **Input:** an image, or a multi-view set
* **Output:** 3D model
* **Cost:** 4 credits (single image) · 5 credits (multi-view input)

### Utility

#### Generate PBR Textures

Run I2M to predict a full PBR material stack — **albedo, metallic, roughness and IOR** — for a textured mesh.

* **Input:** textured 3D model
* **Output:** textured 3D model + individual PBR maps
* **Cost:** 10 credits

### Templates

Pre-built pipelines that wire nodes together for common journeys:

* **PBR Pipeline** — Load 3D Model → Generate PBR Textures. See Apply PBR to your own model.
* **Generate 3D Pipeline** — Image Generation → Generate 3D Model → Generate PBR Textures. See From image to textured 3D.

### Credit costs at a glance

| Node                             | Credits |
| -------------------------------- | ------- |
| Image Upload                     | —       |
| Image Generation                 | 1       |
| Image Edit                       | 1       |
| Multiview                        | 4       |
| 3D Model Upload                  | —       |
| Generate 3D Model (single image) | 4       |
| Generate 3D Model (multi-view)   | 5       |
| Generate PBR Textures            | 10      |

See [Credits & billing](/marso-studio/reference/credits-and-billing.md) for how credits work.


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