# Seedream 4.0 (Text-to-Image)

{% columns %}
{% column width="66.66666666666666%" %}
{% hint style="info" %}
This documentation is valid for the following list of our models:

* `bytedance/seedream-v4-text-to-image`
  {% endhint %}
  {% endcolumn %}

{% column width="33.33333333333334%" %} <a href="https://aimlapi.com/app/bytedance/seedream-v4-text-to-image" class="button primary">Try in Playground</a>
{% endcolumn %}
{% endcolumns %}

## Model Overview

Ultra-fast, consistent in character rendering, and matching [Gemini 2.5 Flash Image (Nano Banana)](https://docs.aimlapi.com/api-references/image-models/google/gemini-2.5-flash-image) in quality.

## 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](https://docs.aimlapi.com/quickstart/setting-up).

## API Schema

## POST /v1/images/generations

>

```json
{"openapi":"3.0.0","info":{"title":"AIML API","version":"1.0.0"},"servers":[{"url":"https://api.aimlapi.com"}],"paths":{"/v1/images/generations":{"post":{"operationId":"_v1_images_generations","requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"model":{"type":"string","enum":["bytedance/seedream-v4-text-to-image"]},"image_size":{"anyOf":[{"type":"string","enum":["square_hd","square","portrait_4_3","portrait_16_9","landscape_4_3","landscape_16_9"]},{"type":"object","properties":{"width":{"type":"number","minimum":1024,"maximum":4096},"height":{"type":"number","minimum":1024,"maximum":4096}},"required":["width","height"]}],"default":"square_hd","description":"The size of the generated image."},"seed":{"type":"integer","minimum":1,"description":"The same seed and the same prompt given to the same version of the model will output the same image every time."},"sync_mode":{"type":"boolean","default":false,"description":"If set to true, the function will wait for the image to be generated and uploaded before returning the response. This will increase the latency of the function but it allows you to get the image directly in the response without going through the CDN."},"enable_safety_checker":{"type":"boolean","default":true,"description":"If set to True, the safety checker will be enabled."},"prompt":{"type":"string","maxLength":4000,"description":"The text prompt describing the content, style, or composition of the image to be generated."},"num_images":{"type":"number","minimum":1,"maximum":4,"default":1,"description":"The number of images to generate."}},"required":["model","prompt"],"title":"bytedance/seedream-v4-text-to-image"}}}},"responses":{"200":{"content":{"application/json":{"schema":{"type":"object","properties":{"data":{"type":"array","nullable":true,"items":{"type":"object","properties":{"url":{"type":"string","nullable":true,"description":"The URL where the file can be downloaded from."},"b64_json":{"type":"string","nullable":true,"description":"The base64-encoded JSON of the generated image."}}},"description":"The list of generated images."},"meta":{"type":"object","nullable":true,"properties":{"usage":{"type":"object","nullable":true,"properties":{"credits_used":{"type":"number","description":"The number of tokens consumed during generation."}},"required":["credits_used"]}},"description":"Additional details about the generation."}}}}}}}}}}}
```

## Quick Example

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

{% tabs %}
{% tab title="Python" %}
{% code overflow="wrap" %}

```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={
            "model": "bytedance/seedream-v4-text-to-image",
            "prompt": "A T-Rex relaxing on a beach, lying on a sun lounger and wearing sunglasses.",
            "image_size": {
                "width": 4096,
                "height": 4096
            },
        }
    )

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

if __name__ == "__main__":
    main()
```

{% endcode %}
{% endtab %}

{% tab title="JS" %}
{% code overflow="wrap" %}

```javascript
async function main() {
  const response = await fetch('https://api.aimlapi.com/v1/images/generations', {
    method: 'POST',
    headers: {
      // Insert your AIML API Key instead of <YOUR_AIMLAPI_KEY>:
      'Authorization': 'Bearer <YOUR_AIMLAPI_KEY>',
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      model: 'bytedance/seedream-3.0',
      prompt: 'A T-Rex relaxing on a beach, lying on a sun lounger and wearing sunglasses.',
      image_size: {
        width: 4096,
        height: 4096
      },
    }),
  });

  const data = await response.json();
  console.log('Generation:', data);
}

main();
```

{% endcode %}
{% endtab %}
{% endtabs %}

<details>

<summary>Response</summary>

{% code overflow="wrap" %}

```json5
{
  "images": [
    {
      "url": "https://v3b.fal.media/files/b/lion/O0byJzpkMBsjWFUMSRelX_ae55fef23aa54a1cad92c3abdf8f5337.png",
      "content_type": "image/png",
      "file_name": "ae55fef23aa54a1cad92c3abdf8f5337.png",
      "file_size": 3282232,
      "width": null,
      "height": null
    }
  ],
  "seed": 1367947822,
  "data": [
    {
      "url": "https://v3b.fal.media/files/b/lion/O0byJzpkMBsjWFUMSRelX_ae55fef23aa54a1cad92c3abdf8f5337.png",
      "content_type": "image/png",
      "file_name": "ae55fef23aa54a1cad92c3abdf8f5337.png",
      "file_size": 3282232,
      "width": null,
      "height": null
    }
  ],
  "meta": {
    "usage": {
      "tokens_used": 63000
    }
  }
}
```

{% endcode %}

</details>

We obtained the following 4096x4096 image by running this code example:

<figure><img src="https://3927338786-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FROMd1X5PuqtikJ48n2N9%2Fuploads%2Fgit-blob-243243aa6584cbaed7641219f4b3a6e9e96b8f82%2Fbytedance-seedream-v4-text-to-image_output.jpg?alt=media" alt=""><figcaption><p><code>"A T-Rex relaxing on a beach, lying on a sun lounger and wearing sunglasses."</code></p></figcaption></figure>