Kling Video V2.6 Pro

POST/v1/run

Kling Video V2.6 Pro is KwaiVGI's image-to-video AI model. Bring static images to life with fluid animation, consistent character motion, and professional-grade video output.

Request body

Submit an async generation request. The model field selects the model; other fields are model-specific input parameters.

stringmodelrequired

Model identifier. Set to kwaivgi/kling-video/v2.6/pro/image-to-video.

Default: kwaivgi/kling-video/v2.6/pro/image-to-video

stringpromptrequired

Text prompt that describes the image or asset to generate.

stringimagerequired

URL of the image to be used for the video

Optional<string>end_image

URL of the image to be used for the end of the video

Optional<integer>duration

The duration of the generated video in seconds

Allowed values: 5, 10

Default: 5

Optional<boolean>generate_audio

Whether to generate native audio for the video. Supports Chinese and English voice output. Other languages are automatically translated to English. For English speech, use lowercase letters; for acronyms or proper nouns, use uppercase.

Default: true

Optional<array<string>>voice_ids

Optional Voice IDs for video generation. Reference voices in your prompt with <<<voice_1>>> and <<<voice_2>>> (maximum 2 voices per task). Get voice IDs from the kling video create-voice endpoint: https://fal.ai/models/fal-ai/kling-video/create-voice

Response Schema

The submit endpoint returns an accepted generation task. Poll the result endpoint with the returned id for terminal outputs or errors.

Optional<string>error

Error message if the task failed. Empty on success.

stringidrequired

Unique identifier for the generation task.

Optional<string>model

Model ID used for the prediction.

Optional<array>outputs

Array of generated content. Empty when status is not completed.

stringstatusrequired

Status of the task: pending, running, completed, failed, or timeout.

Allowed values: pending, running, completed, failed, timeout

Model capabilities

array<string>capability_tagsrequired

Capabilities declared by the model registry.

Default: image-to-video

stringexecution_moderequired

Execution mode declared by the model registry.

Default: async

# 1. Submit a generation request
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "kwaivgi/kling-video/v2.6/pro/image-to-video",
  "prompt": "A king walks slowly and says \"My people, here I am! I am here to save you all\"",
  "image": "https://static.sandbase.ai/examples/mirrored/b08c180c4436-BSJXz9Ht-jgRgMf4IGxLU_upscaled.png",
  "duration": 5
}'

# 2. If the response is still running, poll the returned id
curl https://api.sandbase.ai/v1/run/run_abc123 \
  -H "Authorization: Bearer $SANDBASE_API_KEY"

Response202 Accepted

{
  "id": "run_abc123",
  "model": "kwaivgi/kling-video/v2.6/pro/image-to-video",
  "status": "running",
  "outputs": []
}