KuaishouMediumUltra

Kling v2.6

Kling 2.6 Pro: top-tier image-to-video with cinematic visuals, fluid motion, and native audio generation. Audio generation is enabled by default.

1630 credits

per 5s video with audio (default) — billed per second (no audio 163/s, with audio 326/s)

Cinematic visual quality with fluid, natural motion

Native synchronized audio generation (enabled by default)

5 or 10 second duration options

Text-to-video or image-to-video via start_image

Negative prompt support to steer away from unwanted elements

Run it right now

Test this model instantly in the Console Playground — no code required

Use with AI Assistant

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llms.txtllms.txt ↗

Quick Start

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "kwaivgi/kling-v2.6",
  "input": {
    "prompt": "A cinematic, low-angle tracking shot follows a cyclist from behind as they weave through busy New York City traffic. The camera then smoothly orbits around to the front, capturing the cyclist's determined expression.",
    "duration": 5,
    "aspect_ratio": "16:9",
    "generate_audio": true
  }
}'

Parameters

Parameter	Type	Required	Default	Description
`prompt`	string	Yes	-	Text prompt for video generation
`start_image`	string	No	-	First frame of the video
`negative_prompt`	string	No	-	Things you do not want to see in the video
`aspect_ratio`	string	No	16:9	Aspect ratio of the video. Ignored if start_image is provided 16:99:161:1
`duration`	integer	No	5	Duration of the video in seconds 510
`generate_audio`	boolean	No	true	Generate synchronized audio for the video (enabled by default — doubles the per-second price)

How to Provide File Input

There are 3 ways to provide files for the start_image parameter:

Recommended

Direct Upload (Multipart)

Attach files directly to POST /v1/predictions/upload. No separate upload step needed.

curl -X POST "https://api.core.today/v1/predictions/upload" \
  -H "X-API-Key: cdt_your_api_key" \
  -F "model=kwaivgi/kling-v2.6" \
  -F 'input={"prompt":"your prompt here"}' \
  -F "file:start_image=@your_file.png"

Image URL

Pass a publicly accessible URL directly. You can also use file_url from the Storage API.

{
  "model": "kwaivgi/kling-v2.6",
  "input": {
    "prompt": "your prompt here",
    "start_image": "https://example.com/image.jpg"
  }
}

See the File Upload docs for more upload methods including Presigned URLs.

Common Parameters

Common parameters used when calling POST /v1/predictions.

Parameter	Type	Required	Default	Description
`model`	string	Yes	-	Model identifier
`input`	object	Yes	-	Object containing the model-specific parameters from the table above
`output_folder`	string	No	-	Folder path for output files (max 256 chars, '..' not allowed)
`webhook_url`	string	No	-	Webhook URL to call on completion
`is_public`	boolean	No	false	If true, output files are also available via permanent public URLs

Examples

Cinematic Tracking Shot with Audio

Text-to-video with the default synchronized audio generation

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "kwaivgi/kling-v2.6",
  "input": {
    "prompt": "A cinematic, low-angle tracking shot follows a cyclist from behind as they weave through busy New York City traffic. The camera then smoothly orbits around to the front, capturing the cyclist's determined expression.",
    "duration": 5,
    "aspect_ratio": "16:9",
    "generate_audio": true
  }
}'

Silent Clip (Cost-Optimized)

Explicitly disabling audio halves the per-second price

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "kwaivgi/kling-v2.6",
  "input": {
    "prompt": "A lighthouse beam sweeping across a foggy coastline at dusk, waves crashing below",
    "duration": 10,
    "aspect_ratio": "16:9",
    "generate_audio": false
  }
}'