Image model

Nano Banana Fast

Fast queue for quick previews, creative A/B tests, and bulk generation workloads.

API status: under development

Generation cost

$0.013 / image

Request limit

140 QPS

Billing type

Per generation

Updated

2026-03-11

Billing information API documentation

Billing information

Generation cost: $0.013 / image
Billing unit: 1 image
Settlement model: Per generation
Minimum charge: From 1 image
Free tier: No free tier
Execution queue: Fast

API documentation

Endpoint: /v1/images/generations

Method: POST

Authorization: `Authorization: Bearer $APISTOR_API_KEY`

Error types: /errors

Parameter	Type	Required	Description
model	string	Yes	Model ID from catalog (for example, nanobanano-2).
prompt	string	Yes	Text prompt for image generation.
size	string	No	Output image size: 1024x1024, 2048x2048, 4096x4096.
n	number	No	Number of images in a single request.
format	string	No	Output format: url or b64_json.

Request example (cURL)

curl -X POST "https://api.apistor.io/v1/images/generations" \
  -H "Authorization: Bearer $APISTOR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "nano-banana-fast",
  "prompt": "High-quality ecommerce hero image of a futuristic banana product, soft studio light",
  "size": "1024x1024",
  "n": 1,
  "format": "url"
}'

Response example (JSON)

{
  "id": "gen_01JY7B5Q2P9T2M9A12KJ3R4L2V",
  "model": "nano-banana-fast",
  "status": "completed",
  "price": "$0.013 / image",
  "output": [
    {
      "url": "https://cdn.apistor.io/output/image_01JY7B5Q.webp",
      "width": 1024,
      "height": 1024
    }
  ],
  "created_at": "2026-03-17T10:25:11Z"
}

For production integrations, we will add webhooks, idempotency keys, and SDKs in the next stage.

Open error catalog