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Kling V4 is part of the Kling family.

Kuaishou

Kling V4 AI video generator

Kling V4 makes 3 to 30 second videos with native audio from text or a photo, at 720p or 1080p, with an optional end frame.

$1.80 for a 5 second clip at 720p. Video is paid per clip from your wallet, no subscription. The studio shows the price before you pay, and top ups start at $5.

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Key features

Kling V4 turns a written prompt and a still image you upload into video inside Enhance AI. It produces clips from 3 to 30 seconds at 720p or 1080p. On top of that you can set the final frame and it renders 16:9, 9:16, 1:1 and 21:9. Kling V4 is built by Kuaishou. On Enhance AI it runs on the same account as every other model, with no separate subscription.

Clip length

Kling V4 renders clips from 3 to 30 seconds, and you pick the length before you render. Longer clips cost more because video is billed by length, so rough out an idea short and only render the full length once the shot works.

Resolution

Choose 720p or 1080p before you render. A lower resolution costs less, so test a prompt low and rerender the keeper at the top setting. The studio shows the price for the setting you picked before anything is charged.

Input modes

Start from a written prompt or from a still image. Text to video gives Kling V4 the most freedom; image to video locks the first frame, so a product, a face or a location stays as you shot it while the motion is generated around it.

End frame control

Kling V4 accepts an end frame as well as a first one. Give it where the shot should finish and it renders the motion between the two, which is how you get a clean transition into the next clip or a shot that lands on a product.

Aspect ratios

Kling V4 renders 16:9, 9:16, 1:1 and 21:9. Pick the ratio for the platform before you render rather than cropping afterwards: 9:16 for Reels and Shorts, 16:9 for YouTube, 1:1 for feeds and 21:9 for cinema. The whole frame is generated for that shape.

Audio

Kling V4 can generate sound with the picture, so the clip arrives with audio that matches what is on screen rather than silence you have to fill later. You can still mute it and lay your own voice or music track over the top in any editor.

Specifications

Provider: Kuaishou
Price: $1.80 for a 5 second clip at 720p
Type: Video
Resolution: 720p or 1080p
Modes: Text to video, Image to video
Duration: 3 to 30 seconds
Aspect ratio: 16:9, 9:16, 1:1, 21:9
End frame: Supported

How to use Kling V4 on Enhance AI

1
Sign in and pick Kling V4
Press Try on this page to open the Video Studio with Kling V4 selected. Video is paid per clip from your wallet, which starts empty, so top it up first.
2
Describe the clip or upload a frame
Write a prompt that says what is in the shot, where it is and how the camera moves, or upload a still image to animate as the first frame. Then pick a length from 3 to 30 seconds, a resolution and an aspect ratio.
3
Generate, then download or extend
Press Generate. You see the price before you confirm, and the clip lands in your history, ready to download, upscale or extend.

Common questions

What is Kling V4?: Kling V4 is a video generation model from Kuaishou. It turns a written prompt or a still image into video: 30 second clips at 1080p with native audio.
Can Kling V4 turn a photo into a video?: Yes. Upload a still image, describe the movement you want, and Kling V4 animates it. It also works from a written prompt alone.
How long can a Kling V4 clip be?: Kling V4 produces clips from 3 to 30 seconds. Longer runs cost more, because video is billed by length rather than by generation.
What resolution does Kling V4 output?: Kling V4 renders at 720p or 1080p. You pick the resolution before you render, and a lower one costs less.
Can I control how the clip ends?: Yes. Kling V4 accepts a final frame as well as a first one, so you can steer where the shot finishes rather than hoping for it.
Does Kling V4 generate audio?: Yes. Kling V4 can generate sound with the picture, so the clip arrives with audio rather than silence. Mute it and lay your own track over the top if you prefer.
Is Kling V4 free to try?: No. Video on Enhance AI is paid per clip from your wallet, and a new account starts with an empty wallet, so there are no free Kling V4 clips. The free tokens you get on signup, with no card needed, pay for image and audio tools, not video. Wallet top ups start at $5.
What does it cost to run Kling V4?: It costs $1.80 for a 5 second clip at 720p. Kling V4 renders are billed from your wallet by clip length and resolution, so a short clip at a lower resolution costs less than a long one at full quality. You see the price for your settings before you render.