Kling

Kuaishou’s Kling 3.0: lifelike motion and confident camera work, 3 to 15 second clips at 720p and 1080p, with sound you can turn off to pay less.

Prices

A clip costs its length times the rate: a 5 second 720p clip is $0.925 with sound or $0.625 silent. It’s charged only when the video is delivered.

What it takes

• A prompt of up to 2,500 characters, and optionally a negative_prompt (up to 2,500) of things to keep out.
• A first_frame to animate, and optionally a last_frame to land on. Kling doesn’t take reference images.
• Lengths from 3 to 15 seconds, in whole seconds.
• 16:9, 9:16 and 1:1. From a first frame, the video always takes the image’s shape.
• Sound is on by default; set generate_audio to false for a silent clip at the lower price.
• 720p and 1080p: the higher resolution is a sharper, more detailed render.

Example

{
  "model": "kling-3.0",
  "first_frame": "https://example.com/bakery.jpg",
  "last_frame": "https://example.com/street.jpg",
  "prompt": "The camera glides back from the bakery counter, out through the door and onto the street.",
  "negative_prompt": "text, watermark, blur",
  "seconds": 5,
  "resolution": "720p",
  "generate_audio": false
}

Prompting

• Lead with the subject and what it does, then the camera: “a cyclist crests the hill at sunrise, low tracking shot, then the camera cranes up”.
• Name camera moves plainly: push in, pull back, pan left, orbit, crane up, handheld.
• Use negative_prompt for what keeps creeping in, such as text, watermarks or blur.
• From a first frame, describe the motion rather than what’s already in the picture.
• Keep one main action per clip; join longer sequences from several clips.

Good to know

• Most clips are ready in 2 to 4 minutes; long 1080p clips take longer.
• Prompts or images that may break the content rules can be declined (content_policy); declined videos are free.
• Videos are kept for 30 days; download the ones you want to keep.

Full API details: Video generation. Try it in the dashboard’s Playground, which shows the code for each video.