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Image to Image

Use image-to-image generation for tasks like upscaling, style transfer, image enhancement, and image variation.

Image to Image

Use image-to-image generation for tasks like upscaling, style transfer, image enhancement, and image variation.
Flux logo

Flux

Fast, versatile generation with extensive style support and custom ratios.
Nano Banana Pro logo

Nano Banana Pro

Google's latest model with superior typography and photorealistic detail.
Seedream 4 logo

Seedream 4

High quality image-to-image and text-to-image, photorealistic detail and flexible resolution.
ChatGPT Image logo

ChatGPT Image

Upscale and enhance your images with AI-powered quality improvements
Flux logo

Flux

Fast, versatile generation with extensive style support and custom ratios.
Nano Banana Pro logo

Nano Banana Pro

Google's latest model with superior typography and photorealistic detail.
Seedream 4 logo

Seedream 4

High quality image-to-image and text-to-image, photorealistic detail and flexible resolution.
ChatGPT Image logo

ChatGPT Image

Upscale and enhance your images with AI-powered quality improvements

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Step 1: Upload or Reference an Image

First, you need to provide the source image. You can either:
  • Upload an image file as base64
  • Provide a publicly accessible image URL
import requests
import base64

API_BASE = "https://api.krea.ai/"
API_TOKEN = "YOUR_API_TOKEN"

# Option 1: Using base64 encoded image
with open("input_image.jpg", "rb") as image_file:
    encoded_image = base64.b64encode(image_file.read()).decode('utf-8')

# Option 2: Using image URL
image_url = "https://example.com/input-image.jpg"
Replace with your API TokenTo replace the YOUR_API_TOKEN placeholder in the above examples, you’ll need to generate an API token in krea.ai/settings/api-tokens. Follow the instructions on the API Keys & Billing page if you need help.

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Step 2: Generate Image

Make a POST request to the appropriate endpoint with your image and parameters. 
curl -X POST https://api.krea.ai/generate/image/google/nano-banana-pro\
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "image_url": "https://example.com/input-image.jpg",
    "prompt": "enhance details and clarity",
    "scale": 2,
    "steps": 20
  }'
Example Response 
{
  "job_id": "550e8400-e29b-41d4-a716-446655440000",
  "status": "queued",
  "created_at": "2025-01-15T10:30:00.000Z"
}

​
Step 3: Poll for Results

Image generation is asynchronous. You’ll receive a job ID immediately, then poll for results until the image is ready. Poll /jobs/{job_id} every 2 seconds until the job completes. 
curl -X GET https://api.krea.ai/jobs/YOUR_JOB_ID \
  -H "Authorization: Bearer YOUR_API_TOKEN"
Example Completed Response 
{
  "job_id": "550e8400-e29b-41d4-a716-446655440000",
  "status": "completed",
  "created_at": "2025-01-15T10:30:00.000Z",
  "completed_at": "2025-01-15T10:30:35.000Z",
  "result": {
    "urls": [
      "https://krea.ai/generations/your-enhanced-image.png"
    ]
  }
}
Webhooks available!Set up webhooks to receive notifications when jobs complete. See the Webhooks guide to get started.

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Common Parameters

For a list of detailed parameters for all models, see the Model APIs page.
ParameterTypeDescription
image_urlstringURL of the input image
promptstringDescription of desired transformation
scalenumberUpscaling factor (1-4)
stepsnumberGeneration steps (more steps = higher quality)
strengthnumberHow much to transform the image (0.0-1.0)