Generate images using the lightweight Flux.2 Klein 9B model for fast results.
Model
black-forest-labs/flux.2-klein-9b
Parameters
| Parameter | Type | Required | Default | Description |
|---|
prompt | string | Yes | - | Text description of the image |
aspect_ratio | string | No | "16:9" | "21:9", "16:9", "4:3", "1:1", "3:4", "9:16", "9:21" |
resolution | string | No | "1mp" | "0.6mp", "1mp", "2mp", "4mp" |
image_urls | string[] | No | null | Reference image URLs |
seed | integer | No | random | Seed for reproducibility |
Klein models do not support guidance, steps, or prompt_upsampling.
Example Request
curl -X POST https://api.unifically.com/v1/tasks \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
"model": "black-forest-labs/flux.2-klein-9b",
"input": {
"prompt": "A minimalist line drawing of a mountain landscape",
"aspect_ratio": "16:9",
"resolution": "1mp",
"seed": 42
}
}'
Response
{
"code": 200,
"success": true,
"data": {
"task_id": "abc123def456",
"status": "pending"
}
}
