GPT Image

GPT Image 1.5 for high-quality image generation and editing

Features

Text-to-image generation
Image editing with prompts
Multiple quality levels
Flexible image sizes

Pricing

Quality	1024×1024	1536×1024
low	2 (~$0.02)	3 (~$0.03)
medium	8 (~$0.09)	10 (~$0.11)
high	30 (~$0.33)	40 (~$0.44)

Total credits = base_credits × num_images

Endpoint

POST/api/v1/images/generate

Parameters

Parameter	Type	Required	Description
model	string	Required	Must be "gpt-image-1.5"
prompt	string	Required	Text description of the image
quality	string	Optional	"low", "medium", or "high" (default: medium)
image_size	string	Optional	"1024x1024", "1536x1024", or "1024x1536"
num_images	number	Optional	Number of images (1-4)
input_image	string	Optional	URL or base64 for image editing

Request Example

{
  "model": "gpt-image-1.5",
  "prompt": "A serene Japanese garden with cherry blossoms",
  "quality": "high",
  "image_size": "1024x1024",
  "num_images": 1
}

Response Example

{
  "success": true,
  "data": {
    "task_id": "task_gpt123",
    "credits_used": 30,
    "remaining_credits": 470,
    "model": "gpt-image-1.5"
  }
}

Code Examples

curl -X POST https://gateway.nanobananapro.site/api/v1/images/generate \
  -H "Authorization: Bearer sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-image-1.5",
    "prompt": "A serene Japanese garden with cherry blossoms",
    "quality": "high",
    "image_size": "1024x1024"
  }'