> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ekly.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Nano Banana Pro

> Advanced Gemini 3 Pro model with 4K image generation, real-world grounding, and thinking process.

Advanced Gemini 3 Pro model with 4K image generation, real-world grounding, and thinking process

| | |
| - | - |
| Model id | `gemini-3-pro-image` |
| Media | image |
| Submit to | `POST /v1/images` |
| Price | 4 credits credits before discounts |
| Typical time | about 40.0 s |

## Request

**Required:** `prompt`\
**Optional:** `aspect_ratio`, `image_quality`, `reference_images`

```json theme={null}
{
  "model": "gemini-3-pro-image",
  "prompt": "Three-quarter character sheet of an Indian uncle in a cream kurta, clean forehead, soft studio key, seamless warm grey backdrop, photoreal, 50mm. No text.",
  "aspect_ratio": "1:1",
  "image_quality": "1K"
}
```

| Field | Allowed | Default |
| - | - | - |
| `aspect_ratio` | `1:1`, `3:2`, `2:3`, `4:3`, `3:4`, `5:4`, `4:5`, `16:9`, `9:16`, `21:9` | `"1:1"` |
| `image_quality` | `1K`, `2K`, `4K` | `"1K"` |
| `reference_images` | asset ids (up to 10) | |

Reference inputs take asset ids from [`POST /v1/uploads`](/uploads) or an earlier output's `asset_id`.
Prices and allowed values come from the live catalog; `GET /v1/models/gemini-3-pro-image` is always current.


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