Kling 4.0 AI Video Generator

Create a 3–30 second video from text, one owned photo, or up to 10 photos and 5 videos. Choose 720p or 1080p. Native stereo stays on.

Native stereo
3–30s · 720p–1080p
Text, photo, or refs
Kuaishou · Kling 4.0 docs ↗

Kling 4.0 Examples

Ultrawide hotel lobby video where two people struggle beside a purple chair.

Ultrawide lobby

Prompt

Ultrawide hotel lobby video where two people struggle beside a purple chair.

Key Features of Kling 4.0

Stereo lip sync, a native 30-second take, one continuous story, and two subjects in one shot. Prefill any row; nothing runs until you generate.

Lip sync and stereo

Native stereo stays on. In this studio take, the singer’s mouth follows the vocal for the full 30 seconds.

A singer in headphones records at a studio microphone.

How to Use Kling 4.0

1
1. Start from text, one photo, or references
Use text for a new scene, image to video for one owned start photo and an optional last frame, or reference to video for up to 10 photos and 5 videos. Prefill a Key Feature or Example if you want. Nothing runs until you generate.
Use text for a new scene, image to video for one owned start photo and an optional last frame, or reference to video for up to 10 photos and 5 videos. Prefill a Key Feature or Example if you want. Nothing runs until you generate.
2
2. Set length, resolution, and ratio
Choose every whole second from 3 to 30, and 720p or 1080p. Text uses 16:9, 9:16, 1:1, or 21:9. Image to video follows the photo. Reference to video can use auto, 16:9, 9:16, 1:1, or 21:9. Tag files with @Image1 and @Video1. Native stereo stays on.
Choose every whole second from 3 to 30, and 720p or 1080p. Text uses 16:9, 9:16, 1:1, or 21:9. Image to video follows the photo. Reference to video can use auto, 16:9, 9:16, 1:1, or 21:9. Tag files with @Image1 and @Video1. Native stereo stays on.
3
3. Generate, review, then iterate
Confirm the credit estimate, then generate. Review identity, motion, and sound before you publish or change the prompt.
Confirm the credit estimate, then generate. Review identity, motion, and sound before you publish or change the prompt.

Create with Kling 4.0 ↑

Kling 4.0 Pricing

From 33 credits for 3 seconds at 720p, 83 credits for the default 5-second 1080p video, up to 494 credits for 30 seconds at 1080p with no reference video. A 10-second 720p video with 10 seconds of reference video is 132 credits. The top of the table is 593 credits. Photos do not change the quote. Reference-video seconds do.

Compare Kling 4.0How Kling 4.0 compares to other models

Pick by length, resolution, and reference inputs. Specs below are the live MixVio routes.

Kling 4.0

This model

3–30s video at 720p or 1080p, with a last frame or up to 10 photos and 5 videos

3–30s33–593 credits

Kling 3.0 →Kuaishou

5/10/15s cinematic shots from text or an owned frame

5–15s39–385 credits

Seedance 2.5 →ByteDance

4–30s one-takes, packs up to 50 files, and clay-render blocking

4–30s38–1320 credits

Attribute	This modelKling 4.0	KuaishouKling 3.0 →	ByteDanceSeedance 2.5 →	ViduVidu Q4 →
Best for	3–30s video at 720p or 1080p, with a last frame or up to 10 photos and 5 videos	5/10/15s cinematic shots from text or an owned frame	4–30s one-takes, packs up to 50 files, and clay-render blocking	3–16s videos from one photo or up to 12 photo refs, 540p–4K
Inputs	Text · Start photo · Last frame · Up to 10 photos · 5 videos	Text · Image + end frame	Text · Up to 30 images · 10 videos · 10 audio	Start photo · Up to 12 photos · 3 audio
Output	720p–1080p video + audio	720p–4K video + audio	480p–1080p video + audio	540p–4K video + audio
Duration	3–30s	5–15s	4–30s	3–16s
Native audio	Yes	Yes	Yes	Yes
Credits	33–593 credits	39–385 credits	38–1320 credits	10–437 credits

Stay on Kling 4.0 for a 3–30 second video at 720p or 1080p, with a start photo plus optional last frame, or up to 10 photos and 5 videos. Switch to Kling 3.0 for 5/10/15 second video at up to 4K. Switch to Seedance 2.5 for a 4–30 second one-take with a larger mixed pack. Switch to Vidu Q4 for 540p through 4K from photos and optional voice audio.

Kling 4.0Kling 3.0Seedance 2.5Vidu Q4

Kling 4.0 FAQs

What can I generate with Kling 4.0 on MixVio?

Text to video, image to video, or reference to video. Text uses 16:9, 9:16, 1:1, or 21:9. Image to video takes one start photo and an optional last frame, and follows that photo. Reference to video takes up to 10 photos and 5 videos, 15 files total, and can use auto, 16:9, 9:16, 1:1, or 21:9. Duration is every whole second from 3 to 30. Output is 720p or 1080p. Native stereo audio stays on.

How many credits does Kling 4.0 use?

A 3-second 720p video is 33 credits. The default 5-second 1080p video is 83 credits. A 30-second 1080p video with no reference video is 494 credits. A 10-second 720p video with 10 seconds of reference video is 132 credits. The top of the table is 593 credits for 30 seconds at 1080p with 30 seconds of reference video. Photos do not change the quote. Reference-video seconds do. Confirm the reservation before you generate. Failed runs cost no credits.

Does Kling 4.0 on MixVio include 4K, HDR, or Flash?

No. This route is 720p and 1080p only. 4K, 10-bit HDR, Kling 4.0 Flash, and the two-minute extension are not on MixVio. Kling 3.0 still offers 4K on its own page.

Can I upload keyframes, elements, or a voice?

Image to video accepts one start photo and an optional last frame. Reference to video accepts up to 10 photos and 5 videos. A 10-keyframe editor, element library, voice reference, and video edit are not on this route. Tag reference files with @Image1 and @Video1.

Is Kling 4.0 available on the Free plan?

Yes, when the workspace balance covers the quote. Kling 4.0 is on the Free, Creator, and Pro plans. The generator shows the exact reservation before you generate. Failed runs cost no credits.

What limits apply to reference photos and videos?

Each photo is up to 30MB, with the short side at least 300 pixels and an aspect ratio from 0.4 to 2.5. Each reference video is 3–30.05 seconds, up to 300MB, with both sides from 700 to 4,553 pixels, 23.9–60 FPS, and the same aspect range. Up to 5 videos, and their durations together stay within 30.05 seconds. Prompts stop at 2,500 characters.

Does audio turn off?

No. Kling 4.0 on MixVio includes native stereo audio on every video. There is no audio toggle, and audio does not add a separate credit line.

How is Kling 4.0 different from Kling 3.0 on MixVio?

Kling 4.0 runs 3–30 seconds at 720p or 1080p, with a start photo plus optional last frame, or a pack of up to 10 photos and 5 videos. Kling 3.0 runs 5, 10, or 15 seconds at 720p, 1080p, or 4K, with an optional end frame and no reference-video pack on the public page.

Start a Kling 4.0 video.
Private. Credits shown first.

Start from text, one photo, or a photo and video pack, then generate with Kling 4.0 selected.