Kling4 AI is an AI video generator built on Kling 4. It turns text, images, reference clips and audio into videos with sound, and edits or extends clips with a sentence. It also makes still images to use as opening frames.

Is Kling4 AI the official Kling website?

No. Kling4 AI is an independent product that uses the Kling 4 model through a third-party API. It is not affiliated with, endorsed or sponsored by Kuaishou or Kling AI.

How long can a video be?

Each Kling 4 clip runs 3 to 30 seconds. To go longer, extend it: each extension adds another 3 to 30 seconds and returns the joined video.

Which resolutions and aspect ratios are supported?

720p and 1080p, in 16:9, 9:16, 1:1 or 21:9. When you animate an image, the video follows the image's shape.

Do the videos have sound?

Yes. Kling 4 renders synchronized stereo audio with the picture. You can attach reference audio to guide a voice or a sound, and edits keep the clip's original sound unless you ask for new audio.

How do I edit or extend a video?

Switch the generator to Edit or Extend, attach the clip, and describe the change or what happens next, for example "make it night" or "the camera pulls back". Clips you made here are in your library to download and attach.

How much does a video cost?

Videos are priced per second of output: 28.5 credits per second at 720p and 42.5 at 1080p. When a video is part of the input, the per-second rate is lower but the input length is billed too. You see the cost before each render, and failed renders are refunded.

Can I try it for free?

New accounts get free credits to try it. After that, credits come from a monthly or yearly plan or a one-time top-up.

Can I use the videos commercially?

Yes. Paid plans include commercial use of the videos you create. You are responsible for having the rights to any images, clips or audio you upload.

How long does a video take to render?

Usually a few minutes, longer for 1080p and 30-second clips. The generator shows progress while it renders.

Kling 4 AI Video Generator

Describe a shot, drop in a still or a reference clip, and get a Kling 4 video with sound. Then change it with a sentence, or extend what happens next.

3-30 s per clip
720p or 1080p
Stereo audio built in
Video edit and extend

Nudity, sexual content and edits that undress real people aren't supported and will be blocked. Terms of Service

Showreel

Watch what a prompt turns into

Epic IMAX-style wide shot at a brilliant alpine sunrise. A colossal ancient stone titan slowly rises from beneath a blue glacier as sheets of ice break away and a controlled avalanche rolls into the valley. Two tiny rescue helicopters sweep past the camera to reveal the immense scale while the titan turns toward the first sunlight. Photorealistic feature-film visual effects, majestic rather than frightening, crisp bright atmosphere, natural rock and snow physics, no text, no logos.

What Kling 4 can do

From a sentence to a finished clip

Every Kling 4 mode in one generator. Pick Create, Reference, Edit or Extend, attach what you have and render.

Text and references to video

Describe the scene, the camera and the mood. Add up to 10 images, 5 clips or 3 audio tracks to lock in a character, a camera move or a voice.

Image to video, with keyframes

Your image becomes the first frame. Add a last frame, and up to 8 keyframes in between, to steer the story shot by shot.

Edit a clip with a sentence

Swap the subject, the weather, the time of day or the whole style. The scene and motion stay, and so does the original sound unless you ask for new audio.

Extend it: what happens next

Continue any clip from its last frame with 3 to 30 more seconds and get one joined video back. Give it an end frame if you know where the shot should land.

3-30s: per clip, extendable
1080p: top resolution, or 720p
21:9: plus 16:9, 9:16 and 1:1
Stereo: sound rendered with the picture

Start from a still

Make the first frame, then roll camera

Switch to Image mode to create the opening frame with GPT Image or Nano Banana. Tap Make a video on the result and it opens in Kling 4 as frame one.

Your image is kept as the opening frame
Add a closing frame to decide where the shot ends
Clips up to 30 seconds, with sound

Video

Get inspired

Click any clip or image to load its prompt into Kling4 AI.

How it works

From prompt to clip in three steps

Pick what to do
Create from a prompt, guide it with references, or edit and extend a clip you already have.
Describe and attach
Write the shot in your own words and attach images, clips or audio. Kling4 AI shows the credit cost before it renders.
Render, then refine
Your clip arrives with sound and is saved to your library. Switch to Edit to change it, or Extend to keep going.

Use cases

What people make with Kling 4

Start from one of these prompts and make it yours.

Product spots and social ads

A hero product shot with a camera move and sound, in 9:16 for Reels and TikTok or 16:9 for YouTube, without booking a studio.

Animated shorts

Keep a character consistent from shot to shot by animating its still, then extend each scene into the next.

Music videos and mood pieces

Attach a track as reference audio and let the picture follow its rhythm, in 21:9 when you want it to feel like cinema.

Storyboards and previs

Turn a sequence of sketches or stills into a moving storyboard with keyframes, before anyone is on set.

Kling 4 AI Video Pricing

Pick a plan when you need more videos. Cancel anytime.

Lite

$8.25/month

$9.9Billed $99 per year

For trying ideas and personal projects.

~$0.010 / credit

From ~$0.29 per second of video

Includes

9,600 credits per year (800/mo)
About 5 5-second 720p videos a month
Kling 4 video, plus GPT Image and Nano Banana for stills
Video up to 1080p, 3-30 s per clip
Text, image and reference to video
Video edit and extend
Commercial license

Kling 4 AI Video FAQ

Kling4 AI is an AI video generator built on Kling 4. It turns text, images, reference clips and audio into videos with sound, and edits or extends clips with a sentence. It also makes still images to use as opening frames.
No. Kling4 AI is an independent product that uses the Kling 4 model through a third-party API. It is not affiliated with, endorsed or sponsored by Kuaishou or Kling AI.
Each Kling 4 clip runs 3 to 30 seconds. To go longer, extend it: each extension adds another 3 to 30 seconds and returns the joined video.
720p and 1080p, in 16:9, 9:16, 1:1 or 21:9. When you animate an image, the video follows the image's shape.
Yes. Kling 4 renders synchronized stereo audio with the picture. You can attach reference audio to guide a voice or a sound, and edits keep the clip's original sound unless you ask for new audio.
Switch the generator to Edit or Extend, attach the clip, and describe the change or what happens next, for example "make it night" or "the camera pulls back". Clips you made here are in your library to download and attach.
Videos are priced per second of output: 28.5 credits per second at 720p and 42.5 at 1080p. When a video is part of the input, the per-second rate is lower but the input length is billed too. You see the cost before each render, and failed renders are refunded.
New accounts get free credits to try it. After that, credits come from a monthly or yearly plan or a one-time top-up.
Yes. Paid plans include commercial use of the videos you create. You are responsible for having the rights to any images, clips or audio you upload.
Usually a few minutes, longer for 1080p and 30-second clips. The generator shows progress while it renders.

Make your first Kling 4 video

Start creating See pricing