Models/kling/kling-o3

Kling O3

prospolabs/kling-o3

Kling Omni 3.0 — top-tier prompt fidelity and motion. Pick Standard (cost-effective) or Pro. Text-to-video and image-to-video (start→end interpolation) with optional native audio.

KlingImage to VideoCommercial usePro · Standardtext-to-videoimage-to-video

Up to 40% off

Starts from

$0.100/ second

Retail $0.168

Pay-as-you-go — no subscription, no tokens.

Call the Kling O3 API on Prospolabs with a single POST to /v1/generate using model id kling-o3 and a mode field (one of: text, image). The API and the playground share the same USD price — Standard $0.10–$0.126/sec, Pro $0.134–$0.168/sec — 40% off market. Each call returns a generation_id and an output_url valid for 7 days, and failed runs are auto-refunded.

Quickstart

Send a POST request to /v1/generate with your API key. The model id is kling-o3 and a mode field selecting which input shape you're sending..

Generate a clip from a text prompt.

curl -X POST "https://api.prospolabs.com/v1/generate" \
  -H "Authorization: Bearer $PROSPOLABS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
        "model": "kling-o3",
        "mode": "text",
        "prompt": "A hummingbird hovering near a sunlit flower, slow motion",
        "quality": "standard",
        "generate_audio": false,
        "duration": 5,
        "aspect_ratio": "16:9",
        "shot_type": "customize"
      }'

Backed by fal-ai/kling-video/o3/standard/text-to-video.

Supported parameters for Text → Video

Parameter	Type	Default	Notes
mode	string	text	Required. One of: text, image.
prompt	string	—	Required.
quality	string	standard	Required. One of: standard, pro.
generate_audio	boolean	false
duration	number	5	Range: 3–15.
aspect_ratio	string	16:9	One of: 16:9, 9:16, 1:1.
shot_type	string	customize	One of: customize, intelligent.
multi_prompt	string	—	Storyboard multiple shots — overrides the single prompt above when used.

Response

{
  "generation_id": "gen_abc123",
  "status": "completed",
  "model": "kling-o3",
  "mode": "text",
  "estimated_cost_usd": 0.60,
  "output_url": "https://cdn.prospolabs.com/...",
  "duration_ms": 2143
}

Output retention: output_url is valid for 7 days after generation. After that, requests return HTTP 410 Gone with { "code": "output_expired" }. Download anything you want to keep.