Overview

Kling V3 4K is a video generation model designed for high-resolution short clips. On UniAll AI, the public model id is `kling-v3-4k-silent`. It supports asynchronous video generation through `/v1/videos/generations` and is billed by output duration.

This model is best suited for teams that need sharper visual output than standard or pro tiers, especially for advertising previews, product showcase videos, cinematic short-form assets, and storyboard-to-video workflows.

What Kling V3 4K supports

`kling-v3-4k-silent` supports three generation modes:

| Mode | Required inputs | Best for | |---|---|---| | Text to video | `prompt` | Generating video directly from a written scene description | | Image to video | `prompt`, `image_url` | Animating a product image, character frame, or visual reference | | First/last frame | `prompt`, `first_image_url`, `last_image_url` | Creating a transition between a defined start and end frame |

Core 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
  • Output type: silent video for `kling-v3-4k-silent`

Kling V3 4K vs lower-resolution options

Choose Kling V3 4K when final detail matters more than cost per second. Compared with standard or pro variants, the 4K tier is better for premium creative review, large-screen playback, product details, and campaigns where compression or upscaling artifacts are more noticeable.

Use standard or pro tiers when you are testing prompts, generating many drafts, or producing social content where 4K is not required. A practical workflow is to iterate in a lower-cost tier, then render selected clips with `kling-v3-4k-silent`.

API usage on UniAll AI

Endpoint:

```http POST /v1/videos/generations ```

Example request for image-to-video:

```json { "model": "kling-v3-4k-silent", "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 } ```

Example request for text-to-video:

```json { "model": "kling-v3-4k-silent", "generation_mode": "text_to_video", "prompt": "A luxury smartwatch rotating on a black reflective surface, dramatic rim lighting, slow dolly camera.", "duration": 5, "aspect_ratio": "9:16", "resolution": "4k" } ```

Because generation is asynchronous, production systems should store the task id, poll or handle task status, and design retry logic at the workflow level. UniAll AI refunds failed generations when supported by the model configuration.

Pricing angle

Kling V3 4K is billed per generated second. For the `kling-v3-4k-silent` user price shown in UniAll AI, the listed rate is approximately `$0.2856` per second, displayed as about `¥2.06 / second`. Actual cost depends on selected duration.

Example estimates:

| Duration | Estimated cost at $0.2856/sec | |---:|---:| | 3 seconds | $0.8568 | | 5 seconds | $1.4280 | | 10 seconds | $2.8560 | | 15 seconds | $4.2840 |

For cost control, generate short previews first, keep prompts specific, and reserve 4K output for clips that are likely to be used in production.

Who should use Kling V3 4K API?

Kling V3 4K is a strong fit for:

  • Marketing teams creating high-quality ad variations
  • E-commerce teams producing product motion clips
  • Creative studios building cinematic concepts or storyboards
  • SaaS platforms adding AI video generation to their own products
  • Agencies that need API-based workflows for short-form video assets

It is less cost-efficient for bulk experimentation if every draft is rendered in 4K. For high-volume testing, use lower tiers first and upgrade final selections to 4K.

Implementation notes

For stable integration:

1. Validate the selected `generation_mode` before sending requests. 2. Require the correct image fields for image-based modes. 3. Keep duration between 3 and 15 seconds. 4. Use `9:16` for short-video platforms, `16:9` for landscape ads, and `1:1` for square placements. 5. Track failed jobs and avoid automatic duplicate billing loops.

UniAll AI provides a unified API layer for accessing models such as `kling-v3-4k-silent`, helping developers build video workflows without managing separate model-specific integrations.

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常见问题

What is the public model id for Kling V3 4K on UniAll AI?

The public model id is `kling-v3-4k-silent`. Use this value in the `model` field when calling `/v1/videos/generations`.

Does Kling V3 4K support image-to-video generation?

Yes. Kling V3 4K supports image-to-video with `prompt` and `image_url`, as well as text-to-video and first/last-frame video generation.

How is Kling V3 4K priced?

It is billed per generated second. The listed user rate for `kling-v3-4k-silent` is about `$0.2856` per second, so total cost scales with the selected duration.

官方入口

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