Imagefrom$0.01113 / image
ChatGPT Image 2.5 Sunburst
ChatGPT Image 2.5 SunburstGenerates and edits images · up to 4K · up to 4 per request
text-to-imageimage-edit
curl -X POST https://api.open.sume.com/v1/image-router/generate \
-H "Authorization: Bearer $SUME_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"gpt-image-2.5-sunburst","prompt":"A studio product photo on a white sweep","aspect_ratio":"1:1","resolution":"1K","quality":"auto","num_images":1}'1. Calling the API
ChatGPT Image 2.5 Sunburst has the model id gpt-image-2.5-sunburst. Send a JSON body to POST https://api.open.sume.com/v1/image-router/generate.
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
| model | string | Yes | — | "gpt-image-2.5-sunburst" |
| prompt | string | Yes | — | What the image shows. |
| image_urls | string[] | No | — | Images to edit or follow (HTTPS). |
| aspect_ratio | string | No | 1:1 | Frame shape. Options: auto, 1:1, 16:9, 9:16, 4:3, 3:4, 5:4, 9:8, 4:5. |
| resolution | string | No | 1K | Output resolution. Options: 1K, 2K, 4K. |
| quality | string | No | auto | Quality tier (sets the price). Options: auto, low, medium, high, xhigh, max. |
| num_images | integer | No | 1 | Images per request, 1–4. |
2. Authentication
Send your open.sume.com key as a bearer token from server code only. Keys minted on open.sume.com bill this balance in dollars and call the model API only.
Authorization: Bearer $SUME_API_KEY
Pricing
Dollars per unit at each option, from our rate card; a request rounds up to $0.0001. The estimate above is the exact charge.
| Option | Price |
|---|---|
| 1K · auto | $0.40026 / image |
| 1K · low | $0.01113 / image |
| 1K · medium | $0.02595 / image |
| 1K · high | $0.10008 / image |
| 1K · xhigh | $0.1779 / image |
| 1K · max | $0.40026 / image |
| 2K · auto | $0.40026 / image |
| 2K · low | $0.01113 / image |
| 2K · medium | $0.02595 / image |
| 2K · high | $0.10008 / image |
| 2K · xhigh | $0.1779 / image |
| 2K · max | $0.40026 / image |
| 4K · auto | $0.40026 / image |
| 4K · low | $0.01113 / image |
| 4K · medium | $0.02595 / image |
| 4K · high | $0.10008 / image |
| 4K · xhigh | $0.1779 / image |
| 4K · max | $0.40026 / image |
More models by OpenAI
Price, resolution and duration show each model's full range.
| Model | Type | Price | Resolution | Duration |
|---|---|---|---|---|
| ChatGPT Image 2.5 | image | $0.0104 – $0.40026 / image | 1K – 4K | — |
| ChatGPT Image 2 | image | $0.0060 – $0.2110 / image | 1K – 4K | — |