Gemini 3 Pro Image Generation

curl --request POST \
  --url https://api.aihubmax.com/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "gemini-3-pro-image-preview",
  "prompt": "A minimalist product shot of a luxury watch on marble",
  "aspect_ratio": "1:1",
  "resolution": "1K"
}
'

{
  "created": 1757165031,
  "id": "task-unified-1757165031-uyujaw3d",
  "model": "<string>",
  "object": "image.generation.task",
  "progress": 0,
  "status": "pending",
  "task_info": {
    "can_cancel": true,
    "estimated_time": 45
  },
  "type": "image"
}

{
  "error": {
    "message": "Invalid request parameters",
    "type": "invalid_request_error"
  }
}

{
  "error": {
    "message": "Invalid API key",
    "type": "authentication_error"
  }
}

{
  "error": {
    "message": "Insufficient balance",
    "type": "insufficient_quota"
  }
}

{
  "error": {
    "message": "Parameter validation failed",
    "type": "validation_error"
  }
}

{
  "error": {
    "message": "Rate limit exceeded",
    "type": "rate_limit_error"
  }
}

{
  "error": {
    "message": "Internal server error",
    "type": "server_error"
  }
}

{
  "error": {
    "message": "Service temporarily unavailable, please try again later",
    "type": "service_unavailable"
  }
}

POST

images

generations

curl --request POST \
  --url https://api.aihubmax.com/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "gemini-3-pro-image-preview",
  "prompt": "A minimalist product shot of a luxury watch on marble",
  "aspect_ratio": "1:1",
  "resolution": "1K"
}
'

{
  "created": 1757165031,
  "id": "task-unified-1757165031-uyujaw3d",
  "model": "<string>",
  "object": "image.generation.task",
  "progress": 0,
  "status": "pending",
  "task_info": {
    "can_cancel": true,
    "estimated_time": 45
  },
  "type": "image"
}

{
  "error": {
    "message": "Invalid request parameters",
    "type": "invalid_request_error"
  }
}

{
  "error": {
    "message": "Invalid API key",
    "type": "authentication_error"
  }
}

{
  "error": {
    "message": "Insufficient balance",
    "type": "insufficient_quota"
  }
}

{
  "error": {
    "message": "Parameter validation failed",
    "type": "validation_error"
  }
}

{
  "error": {
    "message": "Rate limit exceeded",
    "type": "rate_limit_error"
  }
}

{
  "error": {
    "message": "Internal server error",
    "type": "server_error"
  }
}

{
  "error": {
    "message": "Service temporarily unavailable, please try again later",
    "type": "service_unavailable"
  }
}

Authorizations

Authorization

string

header

required

All APIs require Bearer Token authentication

Add to request header:

Authorization: Bearer YOUR_API_KEY

Body

application/json

model

string

default:gemini-3-pro-image-preview

required

gemini-3-pro-image-preview: Supports text-to-image, image editing, multi-resolution output

Example:

"gemini-3-pro-image-preview"

prompt

string

required

Image generation prompt

Notes:

Text-to-image mode: Describe the image content you want to generate
Image editing mode: Describe the editing instructions for the reference image

Example:

"A futuristic city skyline at dusk, cyberpunk style"

aspect_ratio

string

default:1:1

Output image aspect ratio

Model differences:

gemini-3.1-flash-image-preview: available values include 1:1, 1:4, 1:8, 2:3, 3:2, 3:4, 4:1, 4:3, 4:5, 5:4, 8:1, 9:16, 16:9, 21:9, match_input_image
gemini-3-pro-image-preview: available values include 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9, match_input_image

Notes:

match_input_image means the output will try to match the input image's aspect ratio

Example:

"1:1"

resolution

string

default:1K

Output image resolution

Model differences:

gemini-3.1-flash-image-preview: supports 512, 0.5K, 1K, 2K, 4K
gemini-3-pro-image-preview: supports 1K, 2K, 4K

Notes:

512 and 0.5K both represent half-size output
1K: approximately 1MP
2K: approximately 4MP
4K: approximately 16MP

Example:

"512"

image_urls

string[] | null

Reference/editing image list

Model differences:

gemini-3.1-flash-image-preview: supports image-to-image and image editing
gemini-3-pro-image-preview: supports image editing

Notes:

Automatically switches to image editing mode when provided
Publicly accessible image URLs are recommended

Example:

["https://example.com/photo.jpg"]

output_format

string | null

Output format

Notes:

Both models support this field
Common values: jpg, png, webp

Do not pass this parameter unless necessary.

Example:

"png"

google_search

boolean | null

Enable search for real-time information

Notes:

Both gemini-3.1-flash-image-preview and gemini-3-pro-image-preview support this field

Do not pass this parameter unless necessary.

Example:

true

image_search

boolean | null

Enable image search to assist generation

Model differences:

gemini-3.1-flash-image-preview: supported
gemini-3-pro-image-preview: not supported

Do not pass this parameter unless necessary.

Example:

true

Response

Task created successfully

created

integer

Task creation timestamp

Example:

1757165031

string

Task ID

Example:

"task-unified-1757165031-uyujaw3d"

model

string

Actual model name used

object

enum<string>

Specific task type

Available options:

image.generation.task

progress

integer

Task progress percentage (0-100)

Required range: 0 <= x <= 100

Example:

0

status

enum<string>

Task status

Available options:

pending,

processing,

completed,

failed

Example:

"pending"

task_info

object

Async task information

Show child attributes

type

enum<string>

Task output type

Available options:

image

Example:

"image"

Image Series

Video Series

Audio Series

Text Series

Document Processing

Task Management

File Management

Gemini 3 Pro Image Generation

Authorizations

All APIs require Bearer Token authentication

Body

Response