AI video model · by KuaishouNEW
Kling 4.0 — AI video generator
Kling 4.0 is the newest video model from Kuaishou, made for long, continuous shots: a single generation runs up to 30 seconds, and Kuaishou describes steadier large-scale motion in fast action and complex camera work.
On Forgeborn you can start from a prompt, from a start and end frame, or from up to 10 reference images and 5 reference videos, and you can also edit a video you already have. Clips come out at 720p or 1080p.
Kling 4.0 specs
The settings you can choose in the Forgeborn video studio.
- Developer
- Kuaishou
- Type
- AI video generator
- Length
- 3 to 30 seconds, in 1-second steps
- Resolution
- 720p, 1080p
- Aspect ratios
- 16:9, 9:16, 1:1, 21:9
- Audio
- Always included
- Input images
- Up to 10
- Reference videos
- Up to 5
- Plans
- Basic, Creator and Pro
Kling 4.0 price in credits
Credits for one clip, by setting and length.
| Setting | 3 s | 5 s | 10 s | 15 s | 20 s | 30 s |
|---|---|---|---|---|---|---|
| 720p | 9 | 15 | 30 | 45 | 59 | 89 |
| 1080p | 14 | 23 | 45 | 67 | 89 | 133 |
- Starter (not included)
- Basic
- Creator
- Pro
- A reference video adds to the price: its length is billed together with the output.
- The studio shows the exact credit cost before every generation.
- See all plans and credit packs on the pricing page.
What you can make with Kling 4.0
One continuous story shot
Plan a scene that unfolds in a single take of up to 30 seconds instead of stitching short clips together.
Product videos from your photos
Add product shots as reference images so the item keeps its look while the camera moves around it.
Re-cut footage you already have
Use the Edit Video tab to change a clip with a prompt, with extra images as guides.
Vertical clips for social
Generate 9:16 videos for Reels, Shorts and TikTok, or 21:9 for a cinematic frame.
Kling 4.0 FAQ
How much does Kling 4.0 cost?
Kling 4.0 starts at 9 credits for a 3 s 720p clip and goes up to 133 credits for the largest setting in the table. Credits come with every Forgeborn plan, and the exact cost is shown before you generate.
Which plans include Kling 4.0?
Basic, Creator or Pro. Starter does not include it.
Does Kling 4.0 generate audio?
Yes, every Kling 4.0 clip includes audio.
How long can a Kling 4.0 video be?
Any length from 3 to 30 seconds, set in one-second steps in the studio. The whole clip is made in one generation.
What can I use as references in Kling 4.0?
Up to 10 images and 5 videos on the References tab. The Frames tab takes a start frame and an optional end frame, and the Edit Video tab takes one source video plus optional images. A reference or source video also counts toward the price, because its length is billed together with the output.
Can I use Kling 4.0 results commercially?
Yes. Commercial use is included on every Forgeborn plan, including Starter.
Related video models
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