Midjourney Niji 7 Image API

Midjourney Niji 7 image generation with reference guidance and selectable processing speed.

Provider

Midjourney

Model ID

mj-niji7

Endpoint

POST /api-platform/v1/generations

Open model playground Create API key

Model notes

Prices below mirror the backend apiPlatform pricing tree audited on 2026-08-10.

Request parameters

Parameter	Type	Required	Description
`model`	string	Yes	Stable PixMind model ID. Use `mj-niji7`. Allowed values: `mj-niji7`
`prompt`	string	Yes	Natural-language generation or editing instructions.
`aspectRatio`	string	No	Requested output aspect ratio. Allowed values: `1:1`, `9:16`, `2:3`, `3:4`, `5:6`, `6:5`, `4:3`, `3:2`, `16:9`, `2:1` Default: `1:1`
`referenceImages`	string[] (URI)	No	Reference image URLs used for editing, composition, subject, or style guidance.
`speed`	string	No	Processing mode. This field can affect request pricing. Allowed values: `relaxed`, `fast`, `turbo` Default: `fast`

Request example

cURL

curl https://aihub-admin.aimix.pro/api-platform/v1/generations \
  -H "Authorization: Bearer $PIXMIND_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "mj-niji7",
  "prompt": "Create a polished campaign image while preserving the supplied subject",
  "aspectRatio": "1:1",
  "referenceImages": [
    "https://example.com/reference.png"
  ],
  "speed": "fast"
}'

JavaScript

const response = await fetch("https://aihub-admin.aimix.pro/api-platform/v1/generations", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.PIXMIND_API_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
  "model": "mj-niji7",
  "prompt": "Create a polished campaign image while preserving the supplied subject",
  "aspectRatio": "1:1",
  "referenceImages": [
    "https://example.com/reference.png"
  ],
  "speed": "fast"
})
});

const task = await response.json();

Accepted task response

Generation is asynchronous. Save taskId and poll GET /api-platform/v1/tasks/{taskId} until status is ready or failed.

200 OK

{
  "code": 1000,
  "data": {
    "id": "img_44160",
    "taskId": 44160,
    "type": "image",
    "model": "mj-niji7",
    "status": "processing"
  }
}

API pricing

Configuration	Price
Relaxed	$0.030 / image
Fast	$0.070 / image
Turbo	$0.110 / image

API pricing uses the apiPlatform role and is separate from PixMind Studio credits. The accepted task response is the final pricing snapshot.