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Model detail

gpt-image-2-sunburst

Provided by OpenAI
Delisted Pay-as-you-go

OpenAI's GPT Image 2.5 Sunburst generates and edits images from text and image references, with a focus on precise editing and detailed creative work.

Model specs

Context length
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Max output
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I/O modalities
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Released
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API endpoints

One MixRoute gateway, OpenAI-compatible

  • OpenAI-compatible /v1/chat/completions POST

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Pricing

Flat rate, unit: /1M Tokens

Input

$75.0000 /1M Tokens

Completion

$150.0000 /1M Tokens

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Selection summary

Quickly judge whether it fits your workload

What is this model good for?

OpenAI's GPT Image 2.5 Sunburst generates and edits images from text

OpenAI's GPT Image 2.5 Sunburst generates and edits images from text and image references, with a focus on precise editing and detailed creative work.

What should you check before using it?

Confirm output sizes and supported image formats

gpt-image-2-sunburst supports streaming, prompt caching, vision input and the OpenAI SDK. Released 2026-09-08. It is billed at 5.00 USD per 1M tokens. Test a representative workload before production.

Why use it through MixRoute?

gpt-image-2-sunburst cache reads cut repeated-prompt cost

Cached prefixes are billed at 1.25 USD per 1M tokens instead of 5.00 USD, so repeated system prompts cost less. MixRoute serves gpt-image-2-sunburst on the OpenAI-compatible endpoint /v1/chat/completions; point your existing client at https://api.mixroute.ai/v1 with the model ID gpt-image-2-sunburst and re-run your integration tests.

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Capabilities & compatibility

Unconfirmed capabilities stay "Unknown," no guesses

Available:

Streaming

gpt-image-2-sunburst supports streamed responses.

EX stream: true streams tokens incrementally, so chat UIs render as they arrive.
Available:

Prompt caching

gpt-image-2-sunburst supports prompt caching under supported routing conditions.

EX Keep the system prompt and tool definitions at the start of the request; repeated prefixes are automatically billed at the cache-read rate.
Available:

Vision input

gpt-image-2-sunburst can process image inputs alongside text.

EX Pass a base64-encoded image in a image_url content part alongside text messages.
Available:

OpenAI SDK

Call gpt-image-2-sunburst through MixRoute's OpenAI-compatible endpoint.

EX Change 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

This model has no cache-read price; caching is not counted

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FAQ

Yes. gpt-image-2-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.

Create an API key View integration docs