flux/kontext-pro/text-to-image

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

• flux/kontext-pro/text-to-image

Try in Playground

Model Overview

A new Flux model optimized for faster generation speed.

Model	Properties of Generated Images
flux/kontext-pro/text-to-image	Format: JPEG, PNG Image size can't be set directly — only a preset aspect ratio can be chosen. Default aspect ratio and size: 1:1, 1024x1024

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

Body

application/json

modelstring · enumRequiredPossible values:

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.

guidance_scalenumber · min: 1 · max: 20Optional

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt when looking for a related image to show you.

safety_tolerancestring · enumOptional

The safety tolerance level for the generated image. 1 being the most strict and 5 being the most permissive.

Default: 2Possible values:

output_formatstring · enumOptional

The format of the generated image.

Default: jpegPossible values:

aspect_ratiostring · enumOptional

The aspect ratio of the generated image.

Default: 16:9Possible values:

Responses

200Success

application/json

post

/v1/images/generations

cURLJavaScriptPython

curl -L \
  --request POST \
  --url 'https://api.aimlapi.com/v1/images/generations' \
  --header 'Authorization: Bearer <YOUR_AIMLAPI_KEY>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "flux/kontext-pro/text-to-image",
    "prompt": "A T-Rex relaxing on a beach, lying on a sun lounger and wearing sunglasses."
  }'

200Success

{
  "data": [
    {
      "url": "https://cdn.aimlapi.com/generations/hedgehog/1749730923700-29fe35d2-4aef-4bc5-a911-6c39884d16a8.png",
      "b64_json": null
    }
  ],
  "meta": {
    "usage": {
      "credits_used": 120000
    }
  }
}

Quick Example

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

Python

import requests
import json  # for getting a structured output with indentation

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": "A T-Rex relaxing on a beach, lying on a sun lounger and wearing sunglasses.",
            "model": "flux/kontext-pro/text-to-image",
            "aspect_ratio": "21:9"   
        }
    )

    data = response.json()
    print(json.dumps(data, indent=2, ensure_ascii=False))

if __name__ == "__main__":
    main()

JS

Response

{
  "images": [
    {
      "url": "https://cdn.aimlapi.com/squirrel/files/koala/6e4yw7_YnA8tEe03QW8wW_5298e11de5a24f1f9cf4f277cbdd3316.jpg",
      "width": 1568,
      "height": 672,
      "content_type": "image/jpeg"
    }
  ],
  "timings": {},
  "seed": 2561481494,
  "has_nsfw_concepts": [
    false
  ],
  "prompt": "A T-Rex relaxing on a beach, lying on a sun lounger and wearing sunglasses."
}

We obtained the following 1568x672 image by running this code example:

'A T-Rex relaxing on a beach, lying on a sun lounger and wearing sunglasses.'