About MiniMax H3 Image Highspeed
MiniMax H3 Image Highspeed is MiniMax's Highspeed tier of H3 Image, an open-weights model that generates images from text and edits or combines up to 16 reference images. It takes the same inputs and limits as H3 Image, renders at about 1, 4 or 16 megapixels at any aspect ratio between 1:3 and 3:1, and rewrites short prompts with more detail before generating.
Prompts refer to reference images by upload order, as @Image1, @Image2 and so on. The model takes no seed or negative prompt.
Ready to build with MiniMax H3 Image Highspeed?
Try MiniMax H3 Image Highspeed in the Workbench to prompt it, compare outputs, and iterate on prompts without writing any code. When you're ready to ship, call the same model from our API and build your own apps on top of it.
curl -sSf -X POST https://hub.oxen.ai/api/ai/images/edit \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $OXEN_API_KEY" \
-d '{
"model": "minimax-h3-image-highspeed",
"prompt": "A red fox curled up under a birch tree in first snow, soft morning light, muted watercolor palette.",
"aspect_ratio": "auto",
"resolution": "2K",
"enable_prompt_expansion": true,
"output_format": "png"
}'Request parameters
Every field MiniMax H3 Image Highspeed accepts in the request body. See the API reference for response formats.
https://hub.oxen.ai/api/ai/images/edit| Field | Type | Required | Default | Description |
|---|---|---|---|---|
prompt | string | Yes | — | Text description of the image to generate, or of the edit to apply. Use @Image1, @Image2, etc. to reference input images. |
input_image | array<string>nullable | No | — | Optional reference images, up to 16. Pass one to edit it, several to combine them, or leave empty to generate from the prompt alone. |
aspect_ratio | string | No | "auto" | auto1:116:99:164:33:43:22:321:93:11:3 |
resolution | string | No | "2K" | 1K2K4K |
enable_prompt_expansion | boolean | No | true | Rewrite the prompt with more detail before generating. Edits always do this. Turning it off for a new image needs a fixed aspect ratio. |
output_format | string | No | "png" | File format for the generated image.pngjpegwebp |