Model detail
gpt-image-2.5-sunburst
GPT Image 2.5 Sunburst is an image generation and editing model from OpenAI, positioned as the precision-oriented tier of the GPT Image 2.5 series. It is suited to detailed creative work where editing accuracy matters more than generation speed, via the dedicated Images API.
Model specs
- Model ID
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gpt-image-2.5-sunburst
- Context length
- –
- Max output
- –
- I/O modalities
- Released
- 2026-09
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API endpoints
One MixRoute gateway, OpenAI-compatible
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OpenAI-compatible
/v1/chat/completionsPOST
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Pricing
Flat rate, unit: /1M Tokens
Input
$5.0000 /1M Tokens
Completion
$30.0000 /1M Tokens
Cache read
$1.2500 /1M Tokens
Image input
$8.0000 /1M Tokens
Image completion
$5.0000 /1M Tokens
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Selection summary
Quickly judge whether it fits your workload
What is this model good for?
Precision-oriented image generation and editing
Use GPT-Image-2.5-Sunburst for detailed creative work where editing accuracy matters more than generation speed, through the dedicated Images API. It is the precision-oriented tier of the OpenAI GPT Image 2.5 series.
What should you check before using it?
Check editing accuracy, formats and per-image cost
Verify the editing precision your workflow needs, the supported input and output image formats and resolution limits, and the per-image pricing before switching production traffic.
Why use it through MixRoute?
Cache reads at 1.25 USD per 1M on MixRoute
Cached prefixes are billed at 1.25 USD per 1M tokens against 5.00 USD standard input, and image output at 5.00 USD per 1M tokens, which keeps repeated editing prompts affordable. Serve it through the same OpenAI-compatible endpoint by setting the model to gpt-image-2.5-sunburst.
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Capabilities & compatibility
Unconfirmed capabilities stay "Unknown," no guesses
Streaming
gpt-image-2.5-sunburst supports streamed responses.
stream: true streams tokens incrementally, so chat UIs render as they arrive.
Prompt caching
GPT-Image-2.5 Sunburst supports prompt caching under supported routing conditions.
Vision input
GPT-Image-2.5 Sunburst can process image inputs alongside text.
image_url content part alongside text messages.
OpenAI SDK
Call GPT-Image-2.5 Sunburst through MixRoute's OpenAI-compatible endpoint.
base_url to https://api.mixroute.ai/v1; everything else follows the OpenAI style.
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Token cost estimator
Live estimate from this page's pricing, not an actual bill
Share of the same prefix read repeatedly, up to 100%
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FAQ
Yes. gpt-image-2.5-sunburst exposes an image editing endpoint, so existing images can be edited rather than only generated.
One endpoint, a testable decision
Test this model and alternate routes with the same request format
Start from a real workload, then let quality, total cost, and failure conditions decide whether to send production traffic.