Video

Kling O3 video

Kling O3 — Standard/Pro. Text + image (start+end frame) + reference + @elements + multi-shot.

Category: Create · kling-o3

How to use & limits

Three modes: text-to-video, image-to-video and reference-to-video.
image_urls accepts up to 2 (main image + end frame, or start/end anchors in reference mode).
reference_image_urls (up to 4) enters reference-to-video mode.
prompt: up to 2,500 characters; duration integer 3 to 15 seconds.
quality: standard, pro or 4K; sound enables audio.
multi_shots requires multi_prompt and sound=true; aspect_ratio (1:1/16:9/9:16) is ignored in image-to-video.
kling_elements only in reference mode.

Capabilities

What this model supports, straight from the schema — no pricing, no infrastructure detail.

Capability	Value
`video_edit` Video edit	—
`multi_shots` Multi-shot	Yes
`multi_prompt` Multi-prompt	Yes
`native_audio` Native audio	Yes
`text_to_video` Text-to-video	Yes
`image_to_video` Image-to-video	Yes
`kling_elements` Multi-reference elements	Yes
`max_prompt_length` Max prompt length	2500
`reference_to_video` Reference-to-video	Yes
`multi_prompt_supported` Multi-prompt	Yes

Parameters

Fields accepted in params (or first-class, where applicable) for POST /generations.

Name	Label	Type	Required	Default	Options	Min / Max	Description
`prompt`	Prompt	textarea	Optional	—	—	—	Scene description; up to 2,500 characters.
`multi_shots`	Multi-shot	boolean	Optional	false	—	—	Enables multi-shot; requires multi_prompt and sound=true.
`multi_prompt`	Per-shot prompts	text	Optional	—	—	—	Per-shot prompts with durations; total ≤ 15s.
`image_urls`	Image references	multi_select	Optional	—	—	— – 2	Up to 2: main image + end frame (or anchors in reference mode).
`reference_image_urls`	Reference images	multi_select	Optional	—	—	— – 4	Up to 4 reference images (reference-to-video mode).
`kling_elements`	Elements	text	Optional	—	—	—	Elements cited as @name; reference mode only.
`duration`	Duration	number	Required	5	—	3 – 15	Duration in seconds, integer 3 to 15.
`sound`	Sound	boolean	Required	true	—	—	Enables audio; must be true in multi-shot.
`aspect_ratio`	Aspect ratio	select	Optional	16:9	1:1 · 16:9 · 9:16	—	Aspect ratio (text/reference): 1:1, 16:9 or 9:16.
`quality`	Quality	select	Optional	standard	standard · pro · 4K	—	Tier: standard, pro or 4K.
`negative_prompt`	Negative prompt	textarea	Optional	—	—	—	Terms to avoid in generation.

Example request

bash

curl -X POST https://caranguejo.art/api/v1/dev/generations \
  -H "Authorization: Bearer $CK" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "kling-o3",
  "prompt": "A ship lifts off from a futuristic city under neon rain, cinematic shot.",
  "params": {
    "duration": 5,
    "sound": true,
    "aspect_ratio": "16:9",
    "quality": "standard"
  }
}'

javascript

const res = await fetch("https://caranguejo.art/api/v1/dev/generations", {
  method: "POST",
  headers: {
    "Authorization": "Bearer " + process.env.CK,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "kling-o3",
    "prompt": "A ship lifts off from a futuristic city under neon rain, cinematic shot.",
    "params": {
      "duration": 5,
      "sound": true,
      "aspect_ratio": "16:9",
      "quality": "standard"
    }
  }),
});
const { data } = await res.json();

Example response

json

{
  "id": "9f0c1a7e-…",
  "object": "generation",
  "model": "kling-o3",
  "type": "video",
  "status": "completed",
  "output": {
    "assets": [
      {
        "url": "https://media.caranguejo.art/outputs/example.mp4",
        "type": "video"
      }
    ]
  }
}

The job's real cost is returned as credits_charged on the completed response — check GET /balance for the account balance.

Common errors for this job type:

`insufficient_credits`	Account balance can't cover the job cost.
`content_policy_violation`	Prompt or media rejected by content policy.
`generation_timeout`	The job exceeded the maximum processing time.
`rate_limited`	Too many requests per minute.
`invalid_input`	A required parameter is missing or outside the model's schema.
`generation_failed`	Generic processing failure.