Kling V3.0 4K Text to Video | Powerful Text-to-Video API

Kling V3.0 4K Text-to-Video

Kling V3.0 4K is Kuaishou's premium text-to-video model, delivering 4K cinematic video generation from natural language prompts. Supports flexible duration from 3 to 15 seconds, multiple aspect ratios, optional synchronized sound, and multi-prompt scene transitions.

Why Choose This?

4K quality The highest visual fidelity and motion realism in the Kling V3.0 family.
Flexible duration Generate videos from 3 to 15 seconds.
Aspect ratio control Multiple options including 16:9, 9:16, 1:1.
Sound generation Optional synchronized sound effects generated alongside the video.
Negative prompt support Specify what you don't want in the video for more precise control.
Multi-prompt and element list support Chain prompt segments for scene transitions and lock in specific visual elements for consistency.

Parameters

Parameter	Required	Description
prompt	Yes	Text description of the desired scene, motion, camera style, and atmosphere.
negative_prompt	No	Elements to exclude from the video.
duration	No	Video length in seconds (3-15, default: 5).
aspect_ratio	No	Video aspect ratio: 16:9 (default), 9:16, 1:1.
cfg_scale	No	Prompt guidance strength (0-1, default: 0.5).
sound	No	Generate synchronized sound alongside the video. Default: disabled.
shot_type	No	Editing mode: customize (default) or intelligent.
multi_prompt	No	Additional prompts for complex scene compositions.
element_list	No	List of visual elements to maintain consistency throughout the clip.

How to Use

Write your prompt — describe the scene, motion, camera movement, and mood in detail.
Add negative prompt (optional) — specify elements you want to exclude.
Set duration — choose any length from 3 to 15 seconds.
Choose aspect ratio — select the format that fits your platform.
Adjust cfg_scale (optional) — control how closely the output follows your prompt.
Enable sound (optional) — generate synchronized audio alongside the video.
Submit — generate, preview, and download your video.

Pricing

$0.42 per second of video, regardless of whether audio is on or off.

Duration	Cost
3s	$1.26
5s	$2.10
10s	$4.20
15s	$6.30

Best Use Cases

Premium Production — Cinematic scenes requiring the highest visual quality in 4K.
Marketing & Ads — High-end promotional videos with professional polish.
Film & Storytelling — Film-quality scenes with superior motion and detail.
Brand Content — Premium video content for brands demanding top-tier visuals.

Pro Tips

Use detailed, cinematic prompts — include lighting, camera angles, and motion descriptions.
Use negative_prompt to avoid common issues like blurry faces or unwanted elements.
Enable sound for environmental audio like rain, city ambience, or action effects.
Match aspect ratio to your target platform: 16:9 for YouTube, 9:16 for TikTok, 1:1 for feeds.

Notes

Prompt is the only required field; all other parameters are optional.
Duration range: 3 to 15 seconds.
Audio does not affect pricing — $0.42 per second regardless.
Using element_list: First use Kling Elements to generate your element and note its name and ID. Then write the element name in your prompt and enter the element ID in the element_list field.

Related Models

Kling V3.0 4K Image-to-Video — Animate still images with 4K quality.
Kling Video O3 4K Text-to-Video — Latest O3 generation with 4K quality.
Kling Elements — Create reusable visual elements for consistent rendering.

Kling v3.0 4k Text To Video API — Quick start

Grab a WaveSpeedAI API key, then call POST https://api.wavespeed.ai/api/v3/kwaivgi/kling-v3.0-4k/text-to-video with your input as JSON. The endpoint returns a prediction id; poll the prediction endpoint until status flips to completed, then read the output URL from data.outputs[0]. Examples for Kling v3.0 4k Text To Video below.

HTTP example

# Submit the prediction
curl -X POST "https://api.wavespeed.ai/api/v3/kwaivgi/kling-v3.0-4k/text-to-video" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY" \
  -d '{
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "negative_prompt": "blurry, low quality, distorted",
    "duration": 5,
    "aspect_ratio": "16:9",
    "cfg_scale": 0.5,
    "sound": false,
    "shot_type": "customize"
}'

# Response includes a prediction id. Poll for the result:
curl -X GET "https://api.wavespeed.ai/api/v3/predictions/{request_id}/result" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY"

# When status is "completed", read the output from data.outputs[0].

Node.js example

// npm install wavespeed
const WaveSpeed = require('wavespeed');

const client = new WaveSpeed(); // reads WAVESPEED_API_KEY from env

const result = await client.run("kwaivgi/kling-v3.0-4k/text-to-video", {
        "prompt": "A cinematic shot of a city at sunset, soft golden light",
        "negative_prompt": "blurry, low quality, distorted",
        "duration": 5,
        "aspect_ratio": "16:9",
        "cfg_scale": 0.5,
        "sound": false,
        "shot_type": "customize"
});

console.log(result.outputs[0]); // → URL of the generated output

Python example

# pip install wavespeed
import wavespeed

output = wavespeed.run(
    "kwaivgi/kling-v3.0-4k/text-to-video",
    {
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "negative_prompt": "blurry, low quality, distorted",
    "duration": 5,
    "aspect_ratio": "16:9",
    "cfg_scale": 0.5,
    "sound": false,
    "shot_type": "customize"
}
)

print(output["outputs"][0])  # → URL of the generated output

Kling v3.0 4k Text To Video API — Frequently asked questions

What is the Kling v3.0 4k Text To Video API?

Kling v3.0 4k Text To Video is a Kuaishou model for video generation, exposed as a REST API on WaveSpeedAI. Kling V3.0 4K delivers top-tier 4K text-to-video generation with smooth motion, cinematic visuals, accurate prompt adherence, and optional audio. Supports flexible aspect ratios, multi-prompt, and element references. Ready-to-use REST inference API, best performance, no cold starts, affordable pricing. You can call it programmatically or try it from the playground above.

How do I call the Kling v3.0 4k Text To Video API?

POST your input parameters to the model's REST endpoint (shown in the API tab of this playground) with your WaveSpeedAI API key in the Authorization header. Submission returns a prediction ID; poll the prediction endpoint until status flips to "completed", then read the output URL from the result. The playground generates a ready-to-paste code sample in Python, JavaScript, or cURL for whatever inputs you've set. Full request/response shape is documented at https://wavespeed.ai/docs/docs-api/kwaivgi/kwaivgi-kling-v3.0-4k-text-to-video.

How much does Kling v3.0 4k Text To Video cost per run?

Kling v3.0 4k Text To Video starts at $2.10 per run. That figure is the base price — the final charge scales with the parameters you set in the form (output size, length, count, references, or whatever knobs this model exposes), so a higher-quality or larger output costs more than a minimal one. The exact cost for your current input is shown live next to the Generate button before you submit, and the actual per-call charge is recorded on the prediction afterwards.

What inputs does Kling v3.0 4k Text To Video accept?

Key inputs: `prompt`, `aspect_ratio`, `duration`, `negative_prompt`, `cfg_scale`, `element_list`. The full JSON schema (types, defaults, allowed values) is rendered above the Generate button and mirrored in the API reference at https://wavespeed.ai/docs/docs-api/kwaivgi/kwaivgi-kling-v3.0-4k-text-to-video.

How do I get started with the Kling v3.0 4k Text To Video API?

Sign up for a free WaveSpeedAI account to claim starter credits, copy your API key from /accesskey, then call the endpoint shown in the API tab of the playground. The playground also auto-generates a code sample in Python, JavaScript, or cURL for the parameters you've set.

Can I use Kling v3.0 4k Text To Video outputs commercially?

Commercial usage rights depend on the model's license, set by its provider (Kuaishou). The license summary appears on the model card above; see WaveSpeedAI's Terms of Service for platform-level conditions.

ExemplesTout voir

Modèles associés

README