Kling 4.0
Kling 4.0 is Kuaishou's newest AI video model, released to everyone on October 15, 2026. On VisionMorphic it makes 3 to 30 seconds of video with sound at 720p or 1080p, and can follow a start frame, up to 8 keyframes and an end frame, or up to 15 reference images, videos, voices and subjects.
What can Kling 4.0 do on VisionMorphic?
Text to video, video from your own frames, and video from references, in the same generator as the other models and on one credit balance.
- Length
- 3 to 30 seconds
- Resolution
- 720p on every plan, 1080p from Basic
- Aspect ratio
- Auto, 16:9, 9:16, 1:1, 21:9. Image to video follows the start frame
- Sound
- Always on
- Frames
- Start frame, up to 8 keyframes and an end frame. A video takes one more frame than its length in seconds, 10 at most
- References
- Up to 10 images, 5 videos (30 seconds in total), 3 voice clips and 7 subjects, 15 in total
- Credits per second
- 13 at 720p, 19 at 1080p
- With a reference video
- 8 at 720p and 12 at 1080p per second of reference plus output, at least twice the video's length
Not here yet: 4K
Kling 4.0 makes 4K in the Kling app. Here it goes up to 1080p for now; Kling 3.0 Omni has 4K.
Not here yet: Kling 4.0 Flash and video editing
The faster Flash model and editing your own clips are not in the generator yet.
How do I make a Kling 4.0 video?
Pick Kling 4.0
Open the generator and choose Kling 4.0 from the model menu.
Add frames or references
Upload a start frame, keyframes for the moments in between and an end frame. Or add reference images, videos, voices and subjects and mention them in the prompt as @Image1, @Video1, @Audio1 or @Subject1.
Set the length and generate
Choose 3 to 30 seconds, an aspect ratio and a resolution. The credit cost shows on the Generate button before you start.
What's new in Kling 4.0?
Kling 4.0 doubles the clip length of Kling 3.0, which came out in January 2026, and adds keyframe control. Kling also says it improved realism, fast motion and camera moves such as tracking and orbit shots, lip-sync, and on-screen text.
| Kling 3.0 | Kling 4.0 | |
|---|---|---|
| Longest clip | 15 seconds | 30 seconds |
| Frames you can set | First and last | First, last, and up to 10 keyframes |
| Spoken languages | Chinese, English, Japanese, Korean, Spanish | Adds Portuguese, German, French, Hindi and more |
What are the Kling 4.0 specs?
The full model as Kling describes it, with the resolutions available here: 3 to 30 seconds at up to 1080p, stereo sound with lip-sync, and up to 15 references per generation. From Kling's Kling 4.0 release note.
- Inputs
- Text to video, image to video, first and last frames, up to 10 keyframes, Omni Reference
- Length
- 3 to 30 seconds
- Resolution
- 720p, 1080p
- Aspect ratio
- 21:9, 16:9, 1:1, 9:16, Auto
- Audio
- Two-channel stereo with lip-sync
- Spoken languages
- Chinese, English, Japanese, Korean, Spanish, Portuguese, German, French, Hindi and more
- Prompt length
- Up to 8,000 characters
- References
- Up to 15 per generation: up to 10 images, 5 videos (30 seconds in total), 7 elements, and voice references
- Video editing
- Up to 5 input clips, 3 to 30 seconds each and 30 seconds combined
Which Kling 4.0 features are still coming?
Two features Kling has announced but not released yet: HDR output and extending a video to two minutes.
10-bit HDR
HDR output at 1080p and 4K. Until then, output is standard dynamic range.
Two-minute extension
Extend a video several times, up to 2 minutes in total.
Kling 4.0 vs Kling 4.0 Flash: what is the difference?
Flash is the faster, lower-cost version for making many drafts. It opened to a small group of users on September 28, 2026, before the full model. VisionMorphic has the full Kling 4.0.
| Kling 4.0 | Kling 4.0 Flash | |
|---|---|---|
| Length | 3 to 30 seconds | 3 to 20 seconds |
| Resolution | 720p, 1080p, 4K | 720p |
| Dynamic range | 10-bit HDR coming soon | 8-bit SDR |
| Image to video | First frame, first and last frames, up to 10 keyframes | First frame |
| Omni Reference | Yes | Yes |
Kling 4.0 vs Seedance 2.5: which should I use?
Both make clips up to 30 seconds with sound, and both are on VisionMorphic. Pick Kling 4.0 for keyframes and a lower rate at 720p and 1080p; pick Seedance 2.5 for more reference files or 480p.
| Kling 4.0 | Seedance 2.5 | |
|---|---|---|
| Available on VisionMorphic | Yes, up to 1080p | Yes |
| Length | 3 to 30 seconds | 4 to 30 seconds |
| Resolution here | 720p, 1080p | 480p, 720p, 1080p |
| References | Up to 15 in total | Up to 30 images, 10 videos, 10 audio clips |
| Frames you can set | First, last, and up to 10 keyframes | First and last |
| Sound | Stereo, lip-sync | Built in, with dialogue |
| Credits per second here | 13 at 720p, 19 at 1080p | 12 at 480p, 24 at 720p, 60 at 1080p |
Questions
Is Kling 4.0 out?
Yes. Kuaishou announced Kling 4.0 on September 28, 2026, opened Kling 4.0 Flash to a small group of users that day, and made Kling 4.0 available to everyone on October 15, 2026, in the Kling AI app and through its MCP and CLI tools.
Can I use Kling 4.0 on VisionMorphic?
Yes. Kling 4.0 is in the generator at 720p and 1080p, 3 to 30 seconds with sound, with keyframes and references. It costs 13 credits per second at 720p and 19 at 1080p. New accounts get 40 free credits, enough for a 3-second 720p video.
How do keyframes work in Kling 4.0?
Add a start frame, then up to 8 keyframes in the order the video should pass through them, and an optional end frame. A video takes one more frame than its length in seconds: 4 frames at 3 seconds, 10 from 9 seconds up.
How much does a Kling 4.0 video cost with a reference video?
8 credits per second at 720p and 12 at 1080p, counted over the reference video plus the output, and never less than twice the output. A 5-second 720p video with a 3-second reference costs 80 credits.
How long can a Kling 4.0 video be?
Kling 4.0 makes 3 to 30 seconds in one generation. Kling 4.0 Flash makes 3 to 20 seconds. Kling has said a feature to extend a video up to 2 minutes is coming.
What is the difference between Kling 4.0 and Kling 4.0 Flash?
Flash is the faster, lower-cost version. It makes 720p clips of 3 to 20 seconds from text, a first frame or Omni Reference. The full Kling 4.0 goes up to 30 seconds and 4K, and adds first and last frames and up to 10 keyframes.
Does Kling 4.0 support 4K and HDR?
Kling 4.0 supports 4K in the Kling app; on VisionMorphic it goes up to 1080p for now. 10-bit HDR at 1080p and 4K is listed by Kling as coming soon, so output is standard dynamic range.
Is this the official Kling website?
No. VisionMorphic is an independent video generator. It is not affiliated with or endorsed by Kuaishou or Kling AI. Specs on this page come from Kling's Kling 4.0 release note.
Make a Kling 4.0 video
Up to 30 seconds with sound, keyframes and references. 40 free credits, no card needed.
Try Kling 4.0 free