---
title: Google | Scenario Docs
---

> This page is auto-generated from model configurations. Last updated: 2026-04-09.

This reference lists all available **Google** image generation models and their parameters. Use these parameter names when calling the [Generation API](/api/postgeneratecustom/index.md).

- [Gemini 2.5 Flash](#gemini-25-flash)
- [Gemini 3.0 Pro](#gemini-30-pro)
- [Gemini 3.1 Flash (Nano Banana 2)](#gemini-31-flash-nano-banana-2)
- [Imagen 3](#imagen-3)
- [Imagen 3 Fast](#imagen-3-fast)
- [Imagen 4](#imagen-4)
- [Imagen 4 Fast](#imagen-4-fast)
- [Imagen 4 Ultra](#imagen-4-ultra)

---

## Gemini 2.5 Flash

Nano-banana is Google’s state-of-the-art image generation and editing model

**Model ID:** `model_google-gemini-2-5-flash-image-editing`

**Capabilities:** `txt2img`, `img2img`

**LLM Markdown:** <https://app.scenario.com/api/models/model_google-gemini-2-5-flash-image-editing/markdown>

| Parameter         | Type        | Required | Default | Min | Max        | Allowed Values                                                                  | Description                                                            |
| ----------------- | ----------- | -------- | ------- | --- | ---------- | ------------------------------------------------------------------------------- | ---------------------------------------------------------------------- |
| `referenceImages` | file\_array | No       | -       | -   | -          | -                                                                               | Reference images for style or content guidance                         |
| `prompt`          | string      | Yes      | -       | -   | -          | -                                                                               | Text prompt for image generation/editing                               |
| `aspectRatio`     | string      | No       | `auto`  | -   | -          | `21:9`, `16:9`, `3:2`, `4:3`, `5:4`, `1:1`, `4:5`, `3:4`, `2:3`, `9:16`, `auto` | Aspect ratio for the generated image                                   |
| `numOutputs`      | number      | No       | `1`     | 1   | 4          | -                                                                               | Number of images to generate                                           |
| `seed`            | number      | No       | -       | 0   | 2147483647 | -                                                                               | Use a seed for reproducible results. Leave blank to use a random seed. |

## Gemini 3.0 Pro

Nano Banana Pro (a.k.a Nano Banana 2) is Google’s new state-of-the-art image generation and editing model

**Model ID:** `model_google-gemini-pro-image-editing`

**Capabilities:** `txt2img`, `img2img`

**LLM Markdown:** <https://app.scenario.com/api/models/model_google-gemini-pro-image-editing/markdown>

| Parameter         | Type        | Required | Default | Min | Max        | Allowed Values                                                                  | Description                                                            |
| ----------------- | ----------- | -------- | ------- | --- | ---------- | ------------------------------------------------------------------------------- | ---------------------------------------------------------------------- |
| `referenceImages` | file\_array | No       | -       | -   | -          | -                                                                               | Reference images for style or content guidance                         |
| `prompt`          | string      | Yes      | -       | -   | -          | -                                                                               | Text prompt for image editing                                          |
| `aspectRatio`     | string      | No       | `auto`  | -   | -          | `21:9`, `16:9`, `3:2`, `4:3`, `5:4`, `1:1`, `4:5`, `3:4`, `2:3`, `9:16`, `auto` | Aspect ratio for the generated image                                   |
| `resolution`      | string      | No       | `2K`    | -   | -          | `1K`, `2K`, `4K`                                                                | Resolution for the generated image                                     |
| `useGoogleSearch` | boolean     | No       | `false` | -   | -          | -                                                                               | Use Google Search to find more information about the prompt            |
| `numOutputs`      | number      | No       | `1`     | 1   | 4          | -                                                                               | Number of images to generate                                           |
| `seed`            | number      | No       | -       | 0   | 2147483647 | -                                                                               | Use a seed for reproducible results. Leave blank to use a random seed. |

## Gemini 3.1 Flash (Nano Banana 2)

Nano Banana 2 combines Pro capabilities with Flash-tier speed — edit and generate images using multimodal understanding, up to 14 reference images, and natural language instructions for context-aware edits that preserve composition, lighting, and style coherence.

**Model ID:** `model_google-gemini-3-1-flash`

**Capabilities:** `txt2img`, `img2img`

**LLM Markdown:** <https://app.scenario.com/api/models/model_google-gemini-3-1-flash/markdown>

| Parameter         | Type        | Required | Default | Min | Max        | Allowed Values                                                                  | Description                                                            |
| ----------------- | ----------- | -------- | ------- | --- | ---------- | ------------------------------------------------------------------------------- | ---------------------------------------------------------------------- |
| `prompt`          | string      | Yes      | -       | -   | -          | -                                                                               | Text prompt for image generation/editing                               |
| `referenceImages` | file\_array | No       | -       | -   | -          | -                                                                               | Reference images for style or content guidance                         |
| `aspectRatio`     | string      | No       | `auto`  | -   | -          | `21:9`, `16:9`, `3:2`, `4:3`, `5:4`, `1:1`, `4:5`, `3:4`, `2:3`, `9:16`, `auto` | Aspect ratio for the generated image                                   |
| `resolution`      | string      | No       | `1K`    | -   | -          | `512`, `1K`, `2K`, `4K`                                                         | Resolution for the generated image                                     |
| `useGoogleSearch` | boolean     | No       | `false` | -   | -          | -                                                                               | Use Google Search to find more information about the prompt            |
| `numOutputs`      | number      | No       | `1`     | 1   | 4          | -                                                                               | Number of images to generate                                           |
| `seed`            | number      | No       | -       | 0   | 2147483647 | -                                                                               | Use a seed for reproducible results. Leave blank to use a random seed. |

## Imagen 3

Google’s highest quality text-to-image model, capable of generating images with detail, rich lighting and beauty

**Model ID:** `model_imagen3`

**Capabilities:** `txt2img`

**LLM Markdown:** <https://app.scenario.com/api/models/model_imagen3/markdown>

| Parameter     | Type   | Required | Default | Min | Max | Allowed Values                      | Description         |
| ------------- | ------ | -------- | ------- | --- | --- | ----------------------------------- | ------------------- |
| `prompt`      | string | Yes      | -       | -   | -   | -                                   | Describe your image |
| `aspectRatio` | string | No       | `4:3`   | -   | -   | `9:16`, `3:4`, `1:1`, `4:3`, `16:9` | Image aspect ratio  |

## Imagen 3 Fast

A faster and cheaper Imagen 3 model, for when price or speed are more important than final image quality.

**Model ID:** `model_imagen3-fast`

**Capabilities:** `txt2img`

**LLM Markdown:** <https://app.scenario.com/api/models/model_imagen3-fast/markdown>

| Parameter     | Type   | Required | Default | Min | Max | Allowed Values                      | Description         |
| ------------- | ------ | -------- | ------- | --- | --- | ----------------------------------- | ------------------- |
| `prompt`      | string | Yes      | -       | -   | -   | -                                   | Describe your image |
| `aspectRatio` | string | No       | `4:3`   | -   | -   | `9:16`, `3:4`, `1:1`, `4:3`, `16:9` | Image aspect ratio  |

## Imagen 4

Google’s Imagen 4 flagship model.

**Model ID:** `model_imagen4`

**Capabilities:** `txt2img`

**LLM Markdown:** <https://app.scenario.com/api/models/model_imagen4/markdown>

| Parameter     | Type   | Required | Default | Min | Max | Allowed Values                      | Description         |
| ------------- | ------ | -------- | ------- | --- | --- | ----------------------------------- | ------------------- |
| `prompt`      | string | Yes      | -       | -   | -   | -                                   | Describe your image |
| `aspectRatio` | string | No       | `4:3`   | -   | -   | `9:16`, `3:4`, `1:1`, `4:3`, `16:9` | Image aspect ratio  |

## Imagen 4 Fast

Use this fast version of Imagen 4 when speed and cost are more important than quality.

**Model ID:** `model_imagen4-fast`

**Capabilities:** `txt2img`

**LLM Markdown:** <https://app.scenario.com/api/models/model_imagen4-fast/markdown>

| Parameter     | Type   | Required | Default | Min | Max | Allowed Values                      | Description         |
| ------------- | ------ | -------- | ------- | --- | --- | ----------------------------------- | ------------------- |
| `prompt`      | string | Yes      | -       | -   | -   | -                                   | Describe your image |
| `aspectRatio` | string | No       | `4:3`   | -   | -   | `9:16`, `3:4`, `1:1`, `4:3`, `16:9` | Image aspect ratio  |

## Imagen 4 Ultra

Use this ultra version of Imagen 4 when quality matters more than speed and cost.

**Model ID:** `model_imagen4-ultra`

**Capabilities:** `txt2img`

**LLM Markdown:** <https://app.scenario.com/api/models/model_imagen4-ultra/markdown>

| Parameter     | Type   | Required | Default | Min | Max | Allowed Values                      | Description         |
| ------------- | ------ | -------- | ------- | --- | --- | ----------------------------------- | ------------------- |
| `prompt`      | string | Yes      | -       | -   | -   | -                                   | Describe your image |
| `aspectRatio` | string | No       | `4:3`   | -   | -   | `9:16`, `3:4`, `1:1`, `4:3`, `16:9` | Image aspect ratio  |