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

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/kling/kling-3.0/4k/text-to-video \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "Native-4K cinematic multi-shot of a Brooklyn artisan coffee shop on a rainy autumn morning. Wide establishing shot through a fogged-up window: a bearded American barista in a denim apron stands behind a polished copper espresso machine, brass fixtures glowing under warm Edison bulbs, exposed brick and hanging plants in the background. Cut to an extreme macro close-up of milk being steamed, micro-foam swirling with visible bubbles and droplets. Cut to a top-down macro shot of his hands pouring a perfect rosetta latte art into a matte ceramic cup, golden crema rippling in slow motion. Cut to a young woman in a cream cable-knit sweater receiving the cup, soft window light catching freckles on her cheeks, green eyes warming as she smiles. Final shot: a slow dolly-out reveals the cozy industrial interior — vinyl records spinning, a chalkboard menu, raindrops streaking the window. Sound of espresso machine hissing, gentle rain on glass, soft indie acoustic guitar. Hyper-detailed textures: yarn weave, hair strands, crema bubbles, raindrop refraction — shot on RED Komodo 6K, anamorphic lenses, shallow depth of field, Kodak Portra color science."
  }'

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": "Input schema",
  "required": [
    "prompt"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "Text description of the scene, motion, camera style, and atmosphere.",
      "type": "string",
      "default": "Native-4K cinematic multi-shot of a Brooklyn artisan coffee shop on a rainy autumn morning. Wide establishing shot through a fogged-up window: a bearded American barista in a denim apron stands behind a polished copper espresso machine, brass fixtures glowing under warm Edison bulbs, exposed brick and hanging plants in the background. Cut to an extreme macro close-up of milk being steamed, micro-foam swirling with visible bubbles and droplets. Cut to a top-down macro shot of his hands pouring a perfect rosetta latte art into a matte ceramic cup, golden crema rippling in slow motion. Cut to a young woman in a cream cable-knit sweater receiving the cup, soft window light catching freckles on her cheeks, green eyes warming as she smiles. Final shot: a slow dolly-out reveals the cozy industrial interior — vinyl records spinning, a chalkboard menu, raindrops streaking the window. Sound of espresso machine hissing, gentle rain on glass, soft indie acoustic guitar. Hyper-detailed textures: yarn weave, hair strands, crema bubbles, raindrop refraction — shot on RED Komodo 6K, anamorphic lenses, shallow depth of field, Kodak Portra color science."
    },
    "negative_prompt": {
      "title": "Negative Prompt",
      "description": "Elements to exclude from the video.",
      "type": "string"
    },
    "duration": {
      "title": "Duration",
      "description": "Video length in seconds.",
      "type": "integer",
      "minimum": 3,
      "maximum": 15,
      "default": 5
    },
    "aspect_ratio": {
      "title": "Aspect Ratio",
      "description": "Output ratio of the generated video.",
      "type": "string",
      "enum": [
        "16:9",
        "9:16",
        "1:1"
      ],
      "default": "16:9"
    },
    "cfg_scale": {
      "title": "CFG Scale",
      "description": "Prompt guidance strength.",
      "type": "float",
      "minimum": 0,
      "maximum": 1,
      "default": 0.5
    },
    "sound": {
      "title": "Sound",
      "description": "Generate synchronized sound alongside the video.",
      "type": "boolean",
      "default": true
    },
    "multi_prompt": {
      "title": "Multi Prompt",
      "description": "Additional prompt segments to guide scene transitions and progressions. The sum of durations in multi_prompt must equal to total video duration",
      "type": "array",
      "items": {
        "prompt": {
          "title": "Prompt",
          "description": "Additional prompt segments to guide scene transitions and progressions.",
          "type": "string",
          "format": "str"
        },
        "duration": {
          "title": "Duration",
          "description": "Duration of the prompt segment in seconds.",
          "type": "integer",
          "format": "int_slider_with_range",
          "minimum": 3,
          "maximum": 15,
          "default": 5
        }
      },
      "maxItems": 20,
      "minItems": 0
    },
    "shot_type": {
      "title": "Shot Type",
      "description": "Editing mode: intelligent (default, auto-determines scope) or customize.",
      "type": "string",
      "enum": [
        "customize"
      ],
      "default": "customize"
    }
  }
}