# Nano Banana Pro API on Opennan

> Nano Banana Pro API on Opennan: $0.05928 per image, 55% below Google's official $0.134 per image.

- Maker: Google
- Category: Image
- Model id: `nano-banana-pro`
- Endpoint: POST https://api.opennan.com/v1/images/generations
- MCP: https://api.opennan.com/v1/mcp (generate_image)
- Page: https://opennan.com/models/nano-banana-pro

## Nano Banana Pro API prices

| Tier | Opennan | Official | Below official |
| --- | --- | --- | --- |
| 1K | $0.05928 | $0.134 | 55% below |
| 2K | $0.05928 | $0.134 | 55% below |
| 4K | $0.06526 | $0.24 | 72% below |

Official is the model maker's own list price for the same tier. Where the maker publishes a price, we never sell above it, most tiers at least 10% below.

## Call Nano Banana Pro from code

```bash
curl https://api.opennan.com/v1/images/generations \
  -H "Authorization: Bearer $OPENNAN_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"nano-banana-pro","prompt":"A glass teapot on a sunlit windowsill, soft morning light, 35mm photo","size":"1K","aspect_ratio":"1:1"}'

# Then poll until "status" is "succeeded" or "failed":
curl https://api.opennan.com/v1/tasks/<task id> -H "Authorization: Bearer $OPENNAN_KEY"
```

## Nano Banana Pro API questions

### How much does the Nano Banana Pro API cost?

Nano Banana Pro API on Opennan: $0.05928 per image, 55% below Google's official $0.134 per image. Prices are in US dollars per call, shown before you run, and every tier is in the price table.

### How does that compare with the official price?

Google lists $0.134 per image; Opennan charges $0.05928 per image, 55% below. We only sell a tier below the maker's official price, most tiers at least 10% below.

### What inputs does Nano Banana Pro take?

Text prompt, Image.

### Which options can a call set?

Sizes: 1K, 2K, 4K. Aspect ratios: 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9.

### How is it billed?

Per image, by quality and size.

### What happens if a generation fails?

A failed task is refunded in full. You pay only for results.

### How do I call Nano Banana Pro from an AI agent?

Add the MCP server https://api.opennan.com/v1/mcp with your API key as a bearer token, then call the generate_image tool with model "nano-banana-pro". Or send a POST to https://api.opennan.com/v1/images/generations.

## Similar models

- [Nano Banana 2.1](https://opennan.com/models/nano-banana-2-1): from $0.0585 per image
- [Flux Dev](https://opennan.com/models/flux-dev): from $0.065 per image
- [Nano Banana 2](https://opennan.com/models/nano-banana-2): from $0.04589 per image
- [GPT Image 2](https://opennan.com/models/gpt-image-2): from $0.039 per image
- [Flux Kontext](https://opennan.com/models/flux-kontext): from $0.0325 per image
- [Seedream 4.0](https://opennan.com/models/seedream-4-0): from $0.02925 per image