Kling 2.1 Image - Unifically

Generate high-quality AI images using Kling 2.1 Image with 4 reference modes for flexible image generation.

Model

kuaishou/kling-2.1-image

Parameters

Parameter	Type	Required	Default	Description
`prompt`	string	Yes	-	Text description of the image to generate
`reference_mode`	string	No	`"restyle"`	Reference strategy: `"restyle"`, `"portrait"`, `"character"`, or `"elements"`
`image_url`	string	Conditional	-	Source image URL. Required for restyle, portrait, and character modes
`aspect_ratio`	string	No	`"1:1"`	`"21:9"`, `"16:9"`, `"3:2"`, `"4:3"`, `"1:1"`, `"3:4"`, `"2:3"`, `"9:16"`
`fidelity`	float	No	`0.5`	How closely to follow the reference image (0.0–1.0)
`human_fidelity`	float	No	`0.65`	Face similarity preservation strength (0.0–1.0, portrait mode only)
`elements`	string[]	Conditional	-	Element image/video URLs (2–4 required for elements mode)
`scene_url`	string	No	-	Background scene image URL (elements mode only)
`style_url`	string	No	-	Style reference image URL (elements mode only)

Mode Requirements

restyle — requires image_url. Uses fidelity to control reference adherence
portrait — requires image_url. Uses fidelity and human_fidelity for face control
character — requires image_url. Uses fidelity only
elements — requires 2–4 elements URLs. Optionally accepts scene_url and style_url

Example - Restyle Mode

curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "kuaishou/kling-2.1-image",
    "input": {
      "prompt": "Transform into an oil painting with vivid colors",
      "reference_mode": "restyle",
      "image_url": "https://example.com/photo.jpg",
      "fidelity": 0.7,
      "aspect_ratio": "16:9"
    }
  }'

Example - Portrait Mode

curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "kuaishou/kling-2.1-image",
    "input": {
      "prompt": "Professional headshot in a modern office setting",
      "reference_mode": "portrait",
      "image_url": "https://example.com/face.jpg",
      "fidelity": 0.5,
      "human_fidelity": 0.8,
      "aspect_ratio": "1:1"
    }
  }'

Example - Elements Mode

curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "kuaishou/kling-2.1-image",
    "input": {
      "prompt": "Two characters standing in a futuristic city",
      "reference_mode": "elements",
      "elements": [
        "https://example.com/character1.jpg",
        "https://example.com/character2.jpg"
      ],
      "scene_url": "https://example.com/city-bg.jpg",
      "style_url": "https://example.com/cyberpunk-style.jpg",
      "aspect_ratio": "16:9"
    }
  }'

Response

{
  "code": 200,
  "success": true,
  "data": {
    "task_id": "abc123def456",
    "status": "processing"
  }
}

​Model

​Parameters

​Mode Requirements

​Example - Restyle Mode

​Example - Portrait Mode

​Example - Elements Mode

​Response

Model

Parameters

Mode Requirements

Example - Restyle Mode

Example - Portrait Mode

Example - Elements Mode

Response