Model API

Kling O3 4K

Kling's Native 4K is a video generation model that directly outputs professional-grade 4K video in one step, eliminating the need for post-production upscaling

Model id

Use this in every request

kling-video/o3/4k/video-to-video/reference

This model has other modes with their own ids: kling-video/o3/4k/text-to-video, kling-video/o3/4k/image-to-video, kling-video/o3/4k/reference-to-video, kling-video/o3/4k/video-to-video/edit.

Run it

Quote the input, start the generation with the quote, then poll the job. Set RAYWAKE_API_KEY first; see Authentication.

# 1. Price the exact input (quotes are valid for up to 10 minutes)
curl -s https://api.raywake.com/v1/quotes \
  -H "Authorization: Bearer $RAYWAKE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "kling-video/o3/4k/video-to-video/reference",
  "input": {
    "prompt": "A red ceramic cup on a wooden table, soft morning light",
    "video_url": "https://example.com/input.mp4"
  }
}'

# 2. Start the generation with the quote_id from step 1
curl -s https://api.raywake.com/v1/generate \
  -H "Authorization: Bearer $RAYWAKE_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{"model": "kling-video/o3/4k/video-to-video/reference", "quote_id": "QUOTE_ID", "input": {"prompt":"A red ceramic cup on a wooden table, soft morning light","video_url":"https://example.com/input.mp4"}}'

# 3. Poll until the status is terminal
curl -s https://api.raywake.com/v1/jobs/JOB_ID \
  -H "Authorization: Bearer $RAYWAKE_API_KEY"

Input

Input fields for kling-video/o3/4k/video-to-video/reference
Name	Type	Description
`prompt`required	string	Text prompt for video generation. Reference video as @Video1.
`video_url`required	string (URL)	Reference video URL. Only .mp4/.mov formats, 3-15s duration, 720-3840px resolution, max 200MB.
`image_urls`	array of image URLs	Reference images for style/appearance. Reference in prompt as @Image1, @Image2, etc. Maximum 4 total (elements + reference images) when using video.
`keep_audio`	boolean	Whether to keep the original audio from the reference video. Default: `true`
`elements`	array of objects	Elements (characters/objects) to include. Reference in prompt as @Element1, @Element2.
`shot_type`	string	The type of multi-shot video generation. Default: `customize`
`aspect_ratio`	string (enum)	Aspect ratio. Default: `auto` One of: `auto`, `16:9`, `9:16`, `1:1`
`duration`	string (enum)	Video duration in seconds (3-15s for reference video). One of: `3`, `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`, `13`, `14`, `15`

Output

A succeeded job lists its results under outputs, stored on our side. See Jobs for every field.

Job excerpt

"outputs": [
  { "type": "video", "url": "https://…", "mime_type": "video/mp4", "thumbnail_url": "https://…" }
]

Pricing

per second$0.6656/ second

The exact charge for your input comes from a quote. How charges settle