Nano Banana API

Create and edit images from a prompt and optional reference images.

Text to image
Image editing

Try model Get API Key Documentation

Starting at

$0.012

per generation

69% cheaper than fal.ai

4 parameters · 1 price options

Nano Banana API pricing

Option	Price per generation	fal.ai	Your savings
Standard	$0.012	$0.039	−69%

Quick start

Full API reference →

1curl -X POST https://api.api-stock.com/api/v1/generation/create \
2  -H "Authorization: Bearer $API_STOCK_KEY" \
3  -H "Content-Type: application/json" \
4  -d '{
5    "model": "nano-banana",
6    "input": {
7      "prompt": "A cinematic shot of a city at dusk",
8      "size": "16:9",
9      "resolution": "1K"
10    }
11  }'

Parameters

Name	Type	Required	Default	Description
`prompt`	string	Yes	—	User's prompt
`urls`	string[]	No	—	Reference image URLs for image generation or editing
`size`	string	No	16:9	Output image size ratioOne of: 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9, 1:4, 1:8, 4:1, 8:1
`resolution`	string	No	1K	Output image resolutionOne of: 512px, 1K, 2K, 4K

Frequently asked questions

How much does Nano Banana cost?

Nano Banana starts at $0.012 per generation on API Stock. The final charge depends on the selected settings.

When was Nano Banana released?

Nano Banana was released on August 26, 2025 and is available through API Stock.

How do I get an API key for Nano Banana?

Create an account and API key on API Stock, then fund your balance. The same key works with Nano Banana and other catalog models.

How do I call the Nano Banana API?

POST to https://api.api-stock.com/api/v1/generation/create with your API key and model "nano-banana". Use the returned task id for polling or receive a webhook.

What input parameters does Nano Banana accept?

Nano Banana accepts 4 input parameters, including the required field(s) prompt. See their types, defaults and allowed values above.

What happens if a Nano Banana request fails?

API Stock automatically retries the request on a reserve provider. If every provider fails, the charge is refunded to your balance.

Can I use Nano Banana with the same API key as other models?

Yes. Use your API Stock API key and balance for Nano Banana and other catalog models.