Kling Video O3 Standard

POST/v1/run

Kling Video O3 Standard by KwaiVGI - animate still images into dynamic videos with AI. Transform photos into cinematic clips with natural motion, camera movement, and optional audio generation.

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/o3/standard/reference-to-video.

Default: kwaivgi/kling-video/o3/standard/reference-to-video

stringpromptrequired

Text prompt for video generation. Either prompt or multi_prompt must be provided, but not both.

stringimagerequired

Image to use as the first frame of the video.

Optional<array<string>>images

Reference images for style/appearance. Reference in prompt as @Image1, @Image2, etc. Maximum 4 total (elements + reference images) when using video.

Optional<string>end_image

Image to use as the last frame of the video.

Optional<integer>duration

Video duration in seconds (3-15s).

Allowed values: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15

Default: 5

Optional<boolean>generate_audio

Whether to generate native audio for the video.

Default: false

Optional<string>shot_type

The type of multi-shot video generation. 'intelligent' lets the model automatically determine shot structure.

Allowed values: customize, intelligent

Default: customize

Optional<array<object>>multi_prompt

List of prompts for multi-shot video generation.

Optional<string>aspect_ratio

The aspect ratio of the generated image.

Allowed values: 16:9, 9:16, 1:1

Response Schema

The submit endpoint returns a run response. If its status is pending or running, poll GET /v1/run/{id} with the returned opaque ID until it reaches a terminal state.

stringidrequired

Opaque SandBase run identifier. Use it exactly as returned; no prefix is guaranteed.

stringstatusrequired

Current public run status.

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

Optional<string>model

Public SandBase model name used for this run.

Optional<array<object>>outputs

Present only for completed runs. Each object is capability-specific; inspect the selected model schema for its fields.

Optional<object>error

Present only for failed or timeout runs. Contains a public error type and sanitized message.

Optional<string>error.type

Stable public error category.

Optional<string>error.message

Sanitized error message safe to show to clients.

Optional<object>usage

Usage details when available.

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/o3/standard/reference-to-video",
  "prompt": "@Element1 and @Element2 is having dinner at this table on @Image1",
  "image": "https://static.sandbase.ai/examples/alibaba/wan/2.2/speech-to-video/input_image_0.png",
  "duration": 5,
  "aspect_ratio": "16:9"
}'

# 2. If the response is still running, poll the returned id
curl https://api.sandbase.ai/v1/run/f3d2e8a1-7c4b-4a12-9d2e-123456789abc \
  -H "Authorization: Bearer $SANDBASE_API_KEY"

Response202 Accepted

{
  "id": "f3d2e8a1-7c4b-4a12-9d2e-123456789abc",
  "model": "kwaivgi/kling-video/o3/standard/reference-to-video",
  "status": "running"
}