What is Kling V3 4K Audio?
Kling V3 4K Audio is an AI video generation model available on UniAll AI under the public model id `kling-v3-4k-audio`. It supports high-resolution video creation with audio output and is designed for short clips where visual quality, motion control, and production-ready formats matter.
The model supports three generation modes:
- **Text to video**: create a video from a written prompt.
- **Image to video**: animate a reference image into a short video.
- **First/last frame video**: guide the clip using a defined starting frame and ending frame.
Outputs can be generated in common aspect ratios including **16:9**, **9:16**, and **1:1**, with duration options from **3 to 15 seconds**.
Best use cases
1. Short-form video assets
Kling V3 4K Audio is useful for creators and marketing teams producing vertical social videos, teaser clips, product moments, and cinematic b-roll. The 9:16 aspect ratio works well for mobile-first channels, while 16:9 is suitable for web, landing pages, and presentations.
2. Product and ecommerce videos
With image-to-video, teams can start from a product render, campaign visual, or catalog image and generate a polished motion clip. This is helpful for product reveals, lifestyle shots, visual ads, and A/B testing creative variations.
3. Storyboards and concept previews
The first/last-frame mode helps creative teams control the beginning and ending composition of a shot. This makes the model practical for previsualization, pitch decks, animation planning, and scene transitions.
4. Automated video workflows
Because the API is asynchronous, developers can integrate it into batch content pipelines, CMS tools, ad creative systems, or internal media platforms. A typical workflow submits a generation job, stores the task id, polls or listens for completion, then saves the returned media URL.
API usage overview
UniAll AI exposes Kling V3 4K Audio through a video generation endpoint:
```http POST /v1/videos/generations ```
Example request for image-to-video:
```json { "model": "kling-v3-4k-audio", "generation_mode": "image_to_video", "prompt": "A cinematic product reveal, soft studio lighting, smooth camera movement.", "image_url": "https://example.com/reference.png", "duration": 5, "aspect_ratio": "16:9", "resolution": "4k", "video_count": 1 } ```
Required inputs depend on the selected mode:
| Mode | Required fields | |---|---| | `text_to_video` | `prompt` | | `image_to_video` | `prompt`, `image_url` | | `first_last_frame` | `prompt`, `first_image_url`, `last_image_url` |
Key parameters include:
- `duration`: 3–15 seconds
- `aspect_ratio`: `16:9`, `9:16`, or `1:1`
- `resolution`: `standard`, `pro`, or `4k`
- `video_count`: fixed at 1 video per generation
Pricing angle
Kling V3 4K Audio is billed per second. For the 4K audio variant on UniAll AI, the listed user price is **$0.2856 per second**. For a 5-second generation, the estimated model charge is therefore approximately **$1.428** before any account-specific adjustments.
Teams that do not always need 4K can compare standard, pro, silent, and audio variants to balance quality and cost. For production systems, it is usually best to reserve 4K audio for final assets and use lower tiers for drafts or internal previews.
Who should use it?
Kling V3 4K Audio is a strong fit for:
- Marketing teams creating campaign clips and product videos
- Developers building AI video tools or creative automation workflows
- Ecommerce platforms generating dynamic product media
- Agencies producing social-first short videos
- Creative teams that need controllable first-frame and last-frame transitions
It is less suitable for long-form video generation because the supported duration range is short-form focused.
常见问题
What is the public model id for Kling V3 4K Audio?
The public model id is `kling-v3-4k-audio`. Use this value in the `model` field when calling the UniAll AI video generation API.
What generation modes does Kling V3 4K Audio support?
It supports text-to-video, image-to-video, and first/last-frame video generation. Each mode requires a prompt, and image-based modes require the relevant image URL fields.
How is Kling V3 4K Audio priced?
It is billed per second. The listed UniAll AI user price for the 4K audio variant is $0.2856 per second, so cost depends mainly on the selected duration.
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