# GPT Image 2.5 Sunburst API on MLMux

> A GPT Image 2.5 model for text-to-image generation at one price per image, at 1K or 2K.

- Model page: https://www.mlmux.com/gpt-image-2-5-sunburst
- API model ID: `weavy/gpt-image-2.5-sunburst`
- Provider: OpenAI
- Generation modes: Text to image
- Endpoint: `POST https://api.mlmux.com/v1/images/generations`
- Reference images: not available yet
- Resolutions: 1K, 2K
- Aspect ratios: 1:1, 16:9, 9:16, 4:3, 3:4
- Output formats: png, jpeg

## Pricing

Pay as you go in credits; 1 credit = 1 US dollar, with no subscription. This model runs only on the `official` route.

- Every image: $0.013 on `official`, at any resolution it supports

## Request

Send your API key as `Authorization: Bearer $MLMUX_API_KEY`. Create keys at https://www.mlmux.com/console/api-keys.

```bash
curl https://api.mlmux.com/v1/images/generations \
  -H "Authorization: Bearer $MLMUX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "weavy/gpt-image-2.5-sunburst",
  "route_mode": "official",
  "prompt": "A red fox in fresh snow at sunrise, cinematic light",
  "resolution": "1K",
  "aspect_ratio": "1:1",
  "output_format": "png",
  "n": 1
}'
```

```python
import os
import requests

response = requests.post(
    "https://api.mlmux.com/v1/images/generations",
    headers={"Authorization": f"Bearer {os.environ['MLMUX_API_KEY']}"},
    json={
  "model": "weavy/gpt-image-2.5-sunburst",
  "route_mode": "official",
  "prompt": "A red fox in fresh snow at sunrise, cinematic light",
  "resolution": "1K",
  "aspect_ratio": "1:1",
  "output_format": "png",
  "n": 1
},
    timeout=300,
)
response.raise_for_status()
print(response.json())
```

The response contains the generated image URLs. Add `"async": true` to get a task to poll instead.

## Frequently asked questions

### What is GPT Image 2.5 Sunburst?

GPT Image 2.5 Sunburst is an image generation model from OpenAI. On MLMux you can run it in the browser or call it through one API. A GPT Image 2.5 model for text-to-image generation at one price per image, at 1K or 2K.

### How do I use the GPT Image 2.5 Sunburst API?

Create an API key in the MLMux Console, then send a POST request to https://api.mlmux.com/v1/images/generations with the key in the Authorization header and model set to weavy/gpt-image-2.5-sunburst. The generated images are returned in the response.

### What can GPT Image 2.5 Sunburst do?

Generation modes: Text to image. Each request returns 1K or 2K images in aspect ratios such as 1:1, 16:9, 9:16, 4:3, and 3:4. Reference images and image editing are not available for GPT Image 2.5 Sunburst on MLMux yet.

### How much does GPT Image 2.5 Sunburst cost?

MLMux is pay as you go, with no subscription or monthly fee, and 1 credit equals 1 US dollar. GPT Image 2.5 Sunburst runs on the official route, where an image costs about $0.013 at any resolution, billed on the tokens each request actually uses. The rates are listed in the pricing section of this page.

### Can I try GPT Image 2.5 Sunburst without writing code?

Yes. Sign in and use the playground at the top of this page to run GPT Image 2.5 Sunburst with the same settings as the API. The API tab shows the matching request in Node.js, Python, and HTTP.

## More

- Image API guide: https://www.mlmux.com/docs/images
- Pricing for every model: https://www.mlmux.com/pricing
- All models: https://www.mlmux.com/llms.txt