> ## Documentation Index
> Fetch the complete documentation index at: https://dripart-docs-custom-nodes-sdk-v2-frontend.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# GeminiNanoBanana2 - ComfyUI Built-in Node Documentation

> The GeminiNanoBanana2 node generates or edits images using Google's Vertex AI Gemini model.

The GeminiNanoBanana2 node generates or edits images using Google's Vertex AI Gemini model. It sends a text prompt, along with optional reference images or files, to the API and returns the generated image and any accompanying text. This node is marked as deprecated.

## Inputs

| Parameter             | Description                                                                                                                                                                                                                                                                                                                                                                      | Data Type | Required | Range                                                                                                                   |
| --------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------- | -------- | ----------------------------------------------------------------------------------------------------------------------- |
| `prompt`              | Text prompt describing the image to generate or the edits to apply. Include any constraints, styles, or details the model should follow. Cannot be empty. (default: empty)                                                                                                                                                                                                       | STRING    | Yes      | N/A                                                                                                                     |
| `model`               | The specific Gemini model to use for image generation.                                                                                                                                                                                                                                                                                                                           | COMBO     | Yes      | "Nano Banana 2 (Gemini 3.1 Flash Image)"                                                                                |
| `seed`                | When the seed is fixed to a specific value, the model makes a best effort to provide the same response for repeated requests. Deterministic output isn't guaranteed. Also, changing the model or parameter settings, such as the temperature, can cause variations in the response even when you use the same seed value. By default, a random seed value is used. (default: 42) | INT       | Yes      | 0 to 18446744073709551615                                                                                               |
| `aspect_ratio`        | If set to 'auto', matches your input image's aspect ratio; if no image is provided, a 16:9 square is usually generated. (default: "auto")                                                                                                                                                                                                                                        | COMBO     | Yes      | "auto"<br />"1:1"<br />"2:3"<br />"3:2"<br />"3:4"<br />"4:3"<br />"4:5"<br />"5:4"<br />"9:16"<br />"16:9"<br />"21:9" |
| `resolution`          | Target output resolution. For 2K/4K the native Gemini upscaler is used.                                                                                                                                                                                                                                                                                                          | COMBO     | Yes      | "1K"<br />"2K"<br />"4K"                                                                                                |
| `response_modalities` | Determines the type of content the model returns: "IMAGE" returns only an image, "IMAGE+TEXT" also returns text. (advanced)                                                                                                                                                                                                                                                      | COMBO     | Yes      | "IMAGE"<br />"IMAGE+TEXT"                                                                                               |
| `thinking_level`      | Controls the depth of the model's reasoning process.                                                                                                                                                                                                                                                                                                                             | COMBO     | Yes      | "MINIMAL"<br />"HIGH"                                                                                                   |
| `images`              | Optional reference image(s). To include multiple images, use the Batch Images node (up to 14).                                                                                                                                                                                                                                                                                   | IMAGE     | No       | 1 to 14 images                                                                                                          |
| `files`               | Optional file(s) to use as context for the model. Accepts inputs from the Gemini Generate Content Input Files node.                                                                                                                                                                                                                                                              | CUSTOM    | No       | N/A                                                                                                                     |
| `system_prompt`       | Foundational instructions that dictate an AI's behavior. (default: a preset prompt that instructs the model to always produce an image) (advanced)                                                                                                                                                                                                                               | STRING    | No       | N/A                                                                                                                     |

**Note:** The `images` input supports a maximum of 14 images. If more are provided, the node will raise an error. The `prompt` input must not be empty or whitespace-only.

## Outputs

| Output Name     | Description                                                                                                      | Data Type |
| --------------- | ---------------------------------------------------------------------------------------------------------------- | --------- |
| `image`         | The primary image generated or edited by the model.                                                              | IMAGE     |
| `string`        | Any text content returned by the model.                                                                          | STRING    |
| `thought_image` | First image from the model's thinking process. Only available with thinking\_level HIGH and IMAGE+TEXT modality. | IMAGE     |

> 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/GeminiNanoBanana2/en.md)

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