Kling Video O3 4K Text-to-Video API by Kuaishou
Kling Omni Video O3 (4K) is Kuaishou advanced unified multi-modal video model with MVL (Multi-modal Visual Language) technology. Generates high-quality videos from text prompts with natural motion and audio generation support.
Kling Video O3 4K Text-to-Video
Kling Video O3 4K is Kuaishou's most powerful text-to-video model, delivering top-tier visual quality and cinematic motion from text prompts alone. Describe any scene — the model generates premium video with flexible aspect ratios, adjustable duration from 3 to 15 seconds, and optional synchronized sound generation.
Why Choose This?
O3 4K quality The highest visual fidelity and motion realism in the Kling family.
Flexible duration Generate videos from 3 to 15 seconds — any length you need.
Aspect ratio control Multiple aspect ratio options including 16:9, 9:16, 1:1, and more to fit any platform.
Sound generation Optional synchronized sound effects generated alongside the video.
Prompt Enhancer Built-in tool to automatically improve your motion descriptions for better results.
Parameters
| Parameter | Required | Description |
|---|---|---|
| prompt | Yes | Text description of the desired scene, motion, and action |
| aspect_ratio | No | Video aspect ratio (default: 16:9) |
| duration | No | Video length: 3–15 seconds (default: 5) |
| sound | No | Generate synchronized audio (default: disabled) |
How to Use
- Run — submit and download your video.
- Enable sound (optional) — generate synchronized audio with the video.
- Set duration — choose any length from 3 to 15 seconds.
- Choose aspect ratio — select the format that fits your platform (16:9 for landscape, 9:16 for vertical, etc.).
- Write your prompt — describe the scene, motion, camera movement, and mood in detail.
Best Use Cases
- Storytelling — Build narrative sequences with precise scene and mood control.
- Concept Visualization — Bring creative ideas to life before committing to production.
- Marketing & Ads — Generate polished promotional clips with synchronized sound effects.
- Social Media & Shorts — Produce vertical or landscape videos for any platform instantly.
- Cinematic Content — Create film-quality scenes with detailed motion and lighting from text alone.
Pro Tips
- Match aspect ratio to your target platform: 16:9 for YouTube, 9:16 for TikTok/Reels, 1:1 for feeds.
- Use shorter durations (3–5 s) for testing, longer (10–15 s) for final production.
- Enable sound for environmental audio like rain, city ambience, crowds, or music scenes.
- Try the Prompt Enhancer to automatically refine your descriptions for richer output.
- Use detailed, cinematic prompts for best results — include lighting, camera angles, and motion descriptions.
Notes
- Duration supports any value from 3 to 15 seconds.
- Prompt is the only required field.
Related Models
- Kling Video O3 Std Text-to-Video — Standard tier text-to-video at budget-friendly pricing.
- Kling Video O3 Pro Reference-to-Video — Create videos guided by reference images for consistent character and style control.
- Kling Video O3 Pro Video Edit — Edit existing videos with natural-language instructions.
- Kling Video O3 Pro Image-to-Video — Animate still images into premium video with O3 Pro quality.
