Krea: Krea 2 Medium vs OpenAI: GPT Image 2.5 Sunburst
A side-by-side comparison of Krea: Krea 2 Medium ($0.11 / image) and OpenAI: GPT Image 2.5 Sunburst ($28.00 / 1M tokens) using current USD prices and capabilities from the api14 catalog. Both run through the same OpenAI-compatible API.
Specifications
| Krea: Krea 2 Medium | OpenAI: GPT Image 2.5 Sunburst | |
|---|---|---|
| Provider | Krea | OpenAI |
| Image output | $0.11 / image | $105.00 / 1M tokens |
| Input | - | $28.00 / 1M tokens |
| Output | - | $28.00 / 1M tokens |
| Cache read | - | $7.00 / 1M tokens |
| Web search | - | $35.00 / 1K searches |
| Context window | 65,536 | 400,000 |
| Max output | 58,982 | 360,000 |
| Input | text, image | text, image |
| Output | image | image |
| Tool calling | ||
| Structured output | ||
| Reasoning control | ||
| Added | Jul 20, 2026 | Sep 9, 2026 |
Key differences
- OpenAI: GPT Image 2.5 Sunburst reads 6.1× more context (400,000 tokens).
- Only OpenAI: GPT Image 2.5 Sunburst supports structured JSON output.
In depth
Krea: Krea 2 Medium is an image model from Krea, released on 2026-07-20. OpenAI: GPT Image 2.5 Sunburst is an image model from OpenAI, released on 2026-09-09. Both sit in the same category on api14, so you are choosing between two image generators rather than between an image model and a text model. Each takes text and image input and returns image output, which means both can be used for straight text to image work as well as for edits or transformations driven by a reference image you supply.
The clearest difference is context. GPT Image 2.5 Sunburst has a context window of 400000 tokens, while Krea 2 Medium has 65536 tokens, so the OpenAI model is the one with the bigger context by a wide margin. That matters when your prompt carries a lot of material, for example long style descriptions, several reference images, or detailed instructions that must all be respected in one call. The other difference is parameter support. GPT Image 2.5 Sunburst exposes max_tokens, response_format, seed and structured_outputs, while Krea 2 Medium lists no supported parameters. In practice that means the OpenAI model gives you control over output formatting and reproducibility through a seed, and it can return structured outputs, whereas Krea 2 Medium is called with the basic inputs and nothing else. Input and output modalities are the same on both sides, and the qualitative notes do not mark either model as cheaper or as the only one with tool or reasoning support, so price and those capabilities are not deciding factors here.
For day to day generation where your prompt is short and you just want an image back, either model will do the job, and Krea 2 Medium is a reasonable default because nothing in its parameter surface needs configuring. Reach for GPT Image 2.5 Sunburst when the request is heavy: very long prompts, multiple reference images, or instructions that need to survive a large context. It is also the better pick when you need a seed to reproduce a result, when you want to control the response format, or when your pipeline expects structured outputs it can parse rather than a bare image. If you are building an automated system that retries and compares generations, the seed and structured output support on the OpenAI side will save you work that you would otherwise have to build around Krea 2 Medium.
Calling either model through api14 works the same way because the API is OpenAI compatible. You send your request to the same endpoint with the same request shape, and the only thing that changes is the model id. Use "krea/krea-2-medium" for Krea 2 Medium and "openai/gpt-image-2.5-sunburst" for GPT Image 2.5 Sunburst. Your text and image inputs go in as usual, and the image comes back in the response. If you are switching from one to the other, keep in mind that parameters such as max_tokens, response_format, seed and structured_outputs are only listed for the OpenAI model, so a request that sets them will not carry over cleanly to Krea 2 Medium.
Switch with one string
Both models use the same endpoint and request shape. Change the model value from "krea/krea-2-medium" to "openai/gpt-image-2.5-sunburst" and prompts, streaming and tools keep working.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api14.com/api/v1",
apiKey: process.env.API14_API_KEY,
});
const result = await client.images.generate({
"model": "openai/gpt-image-2.5-sunburst",
"prompt": "A minimalist product photo of a ceramic mug on a wooden table",
"n": 1,
"aspect_ratio": "1:1"
});
import { writeFile } from "node:fs/promises";
await writeFile("image.png", Buffer.from(result.data[0].b64_json, "base64"));
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