Kling V3.0 4K Image-to-Video: Native 4K Image Animation on playground and API | RunComfy

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/kling/kling-3.0/4k/image-to-video \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "Bring this still photograph to life in native 4K with hyper-detailed motion. The young American ceramic artist's hands gently cradle and shape the spinning gray clay vessel — the wheel rotates with smooth controlled motion, the soft clay walls rise and slim under her thumbs, a thin glistening ribbon of water trickles continuously down the side, and a few fine droplets of clay-water flick outward in slow motion catching the light. Loose strands of her dirty-blonde hair sway gently, her chest rises and falls with steady calm breathing, eyes stay focused, a small subtle smile tugs at her lips, the linen apron shifts almost imperceptibly. Behind her, dust motes drift through the warm shaft of honey golden-hour light streaming through the multi-pane windows, dried botanicals sway slightly, and faint shadows shift across the whitewashed brick wall as the sun moves. The camera slowly pushes in from a tight medium close-up to an extreme close-up of the wet clay vessel and her glistening fingers, then drifts back up to her face. Ambient sound: the soft whir of the pottery wheel, water droplets, the rustle of linen, distant Portland street ambience, and a warm vinyl indie-folk record playing low. Native-4K hyper-detailed textures — wet clay surface sheen, fingertip ridges, water droplets, hair strands, linen apron weave, brick grain, wood shelf knots — shot on RED Komodo 6K, 50mm anamorphic, shallow depth of field, Kodak Portra color science.",
    "start_image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7353/media-files/input.png"
  }'

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

{
  "type": "object",
  "title": "modelApiDoc_navInputSchema",
  "required": [
    "prompt",
    "start_image_url"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "",
      "type": "string",
      "default": "Bring this still photograph to life in native 4K with hyper-detailed motion. The young American ceramic artist's hands gently cradle and shape the spinning gray clay vessel — the wheel rotates with smooth controlled motion, the soft clay walls rise and slim under her thumbs, a thin glistening ribbon of water trickles continuously down the side, and a few fine droplets of clay-water flick outward in slow motion catching the light. Loose strands of her dirty-blonde hair sway gently, her chest rises and falls with steady calm breathing, eyes stay focused, a small subtle smile tugs at her lips, the linen apron shifts almost imperceptibly. Behind her, dust motes drift through the warm shaft of honey golden-hour light streaming through the multi-pane windows, dried botanicals sway slightly, and faint shadows shift across the whitewashed brick wall as the sun moves. The camera slowly pushes in from a tight medium close-up to an extreme close-up of the wet clay vessel and her glistening fingers, then drifts back up to her face. Ambient sound: the soft whir of the pottery wheel, water droplets, the rustle of linen, distant Portland street ambience, and a warm vinyl indie-folk record playing low. Native-4K hyper-detailed textures — wet clay surface sheen, fingertip ridges, water droplets, hair strands, linen apron weave, brick grain, wood shelf knots — shot on RED Komodo 6K, 50mm anamorphic, shallow depth of field, Kodak Portra color science."
    },
    "multi_prompt": {
      "title": "Multi Prompt Segments",
      "description": "Provide multiple prompt segments for scene transitions. The sum of all segment durations must equal the total video duration.",
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "prompt": {
            "type": "string",
            "format": "str"
          },
          "duration": {
            "type": "integer",
            "format": "int_slider_with_range",
            "minimum": 3,
            "maximum": 15,
            "default": 5
          }
        }
      },
      "maxItems": 20,
      "minItems": 0
    },
    "start_image_url": {
      "title": "Start Image",
      "description": "Starting image of the video. Supports jpg, jpeg, png, bmp, webp formats.",
      "type": "string",
      "default": "https://playgrounds-storage-public.runcomfy.net/tools/7353/media-files/input.png"
    },
    "end_image_url": {
      "title": "End Image",
      "description": "Optional ending image for controlled transitions between two frames. Supports jpg, jpeg, png, bmp, webp formats.",
      "type": "string"
    },
    "duration": {
      "title": "Duration",
      "description": "Total duration of the generated video in seconds.",
      "type": "integer",
      "minimum": 3,
      "maximum": 15,
      "default": 10
    },
    "generate_audio": {
      "title": "Generate Audio",
      "description": "Enable this option to generate audio for the video.",
      "type": "boolean",
      "default": true
    },
    "elements": {
      "title": "Elements",
      "description": "Input assets used for generation, including reference images and video segments.",
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "frontal_image_url": {
            "type": "string",
            "format": "image_uri",
            "description": "Frontal image reference for the subject."
          },
          "reference_image_urls": {
            "type": "array",
            "format": "image_uris",
            "items": {
              "type": "string",
              "format": "image_uri"
            },
            "description": "Additional reference image URLs used to guide rendering."
          },
          "video_url": {
            "type": "string",
            "format": "video_uri",
            "description": "Optional source video used for motion reference."
          }
        }
      },
      "minItems": 0,
      "maxItems": 3
    },
    "shot_type": {
      "title": "Shot Type",
      "description": "Defines how the camera shot or scene framing is handled.",
      "type": "string",
      "enum": [
        "customize"
      ],
      "default": "customize"
    },
    "negative_prompt": {
      "title": "Negative Prompt",
      "description": "",
      "type": "string"
    },
    "cfg_scale": {
      "title": "Guidance Scale",
      "description": "Classifier-Free Guidance scale controlling adherence to the prompt.",
      "type": "float",
      "minimum": 0,
      "maximum": 1,
      "default": 0.5
    }
  }
}