Imagen 4 Preview

This documentation is valid for the following list of our models:

  • google/imagen4/preview

Model Overview

Google’s highest quality image generation model as of May 2025.

Setup your API Key

If you don’t have an API key for the AI/ML API yet, feel free to use our Quickstart guide.

API Schema

post
Authorizations
Body
modelundefined · enumRequiredPossible values:
aspect_ratiostring · enumOptional

The aspect ratio of the generated image.

Default: 1:1Possible values:
negative_promptstringOptional

The description of elements to avoid in the generated image.

promptstring · max: 4000Required

The text prompt describing the content, style, or composition of the image to be generated.

num_imagesnumber · min: 1 · max: 4Optional

The number of images to generate.

Default: 1
seedinteger · min: 1Optional

The same seed and the same prompt given to the same version of the model will output the same image every time.

Responses
201Success
post
POST /v1/images/generations HTTP/1.1
Host: api.aimlapi.com
Authorization: Bearer <YOUR_AIMLAPI_KEY>
Content-Type: application/json
Accept: */*
Content-Length: 120

{
  "model": "google/imagen4/preview",
  "aspect_ratio": "1:1",
  "negative_prompt": "text",
  "prompt": "text",
  "num_images": 1,
  "seed": 1
}
201Success

No content

Quick Example

Let's generate an image of the specified aspect ratio using a simple prompt.

import requests


def main():
    response = requests.post(
        "https://api.aimlapi.com/v1/images/generations",
        headers={
            # Insert your AIML API Key instead of <YOUR_AIMLAPI_KEY>:
            "Authorization": "Bearer <YOUR_AIMLAPI_KEY>",
            "Content-Type": "application/json",
        },
        json={
            "prompt": "Racoon eating ice-cream",
            "model": "google/imagen4/preview",
            "aspect_ratio": "16:9"
        }
    )

    response.raise_for_status()
    data = response.json()

    print("Generation:", data)


if __name__ == "__main__":
    main()
Response
Generation: {'images': [{'url': 'https://cdn.aimlapi.com/eagle/files/penguin/4ZNAvdmVu4PNSrRxSAb3X_output.png', 'content_type': 'image/png', 'file_name': 'output.png', 'file_size': 1697349}], 'seed': 595549216}

So we obtained the following 1408x768 image by running this code example:

In reality, raccoons shouldn’t be given ice cream or chocolate—it’s harmful to their metabolism. But in the AI world, raccoons party like there’s no tomorrow.

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