Input
Direct official-provider route with the highest provider-aligned rate.
Default: "auto"
Default: "1K"
GPT Image 2.5 Sunburst
A GPT Image 2.5 model for text-to-image generation at one price per image, at 1K or 2K.
Output
Ready for a predictionAdjust the inputs, then run the model.
Examples
View more examples ↗Pricing
Choose the same two routing tiers used across MLMux. The selected route is included as route_mode in every request.
Learn more about pricing ↗Token rates
GPT Image 2.5 Sunburst is billed on the tokens it returns, per 1M tokens: official at the provider's published rates, official-cheap at 50% of them. If a response carries no usage, the per-image price applies.
| Tokens | official |
|---|---|
| Text input | $5 / 1M tokens |
| Image input | $8 / 1M tokens |
| Image output | $30 / 1M tokens |
Readme
GPT Image 2.5 Sunburst is available through MLMux with one request shape and two explicit route tiers.
One price at 1K or 2K
Sunburst charges the same per image whether you request 1K or 2K, which keeps the cost of batch jobs predictable.
Generate from a prompt
Describe the image you want, including any text or layout it should contain, and get it back in one request.
Common shapes
Request a square, landscape, portrait, or 4:3 image, or let the model choose the shape with auto.
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.
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