Kling 3.0 vs Kling 4.0
Kling 3.0 from Kling AI and Kling 4.0 from Kling AI, compared on what you can feed them, what they output and what they cost here.
Updated October 30, 2026
The short answer
- Kling 4.0 has the lower starting price: 18 credits/s (720p, 3s) against 30 credits/s (720p, 3s) for Kling 3.0. At the same resolution the gap can be smaller; see the table below.
- Kling 4.0 makes longer clips: up to 30 seconds, Kling 3.0 up to 15.
- Audio: Kling 3.0 optional, Kling 4.0 none (silent video).
- Kling 4.0 accepts reference videos; Kling 3.0 does not.
- Only Kling 4.0 takes reference images (up to 9) for characters, products or style.
Specs side by side
| Kling 3.0 | Kling 4.0 | |
|---|---|---|
| Developer | Kling AI | Kling AI |
| Inputs | text to video, first and last frame | text to video, first and last frame, up to 9 reference images |
| Reference uploads | none | 9 images, 3 videos |
| Resolutions | 720p, 1080p | 720p, 1080p |
| Length | 3–15 seconds | 3–30 seconds |
| Aspect ratios | 16:9, 9:16, 1:1 | auto, 21:9, 16:9, 1:1, 9:16 |
| Audio | optional | none (silent video) |
| Lowest price | 30 credits/s (720p, 3s) | 18 credits/s (720p, 3s) |
Price for a short clip
Kling 3.0: 150 credits for 5 seconds at 720p. Kling 4.0: 90 credits for 5 seconds at 720p. Every price for every length and resolution is on each model's page; plans and credit packs are on Pricing.
Credits per second at each resolution
| Resolution | Kling 3.0 | Kling 4.0 |
|---|---|---|
| 720p | 30 credits/s | 18 credits/s |
| 1080p | 40 credits/s | 26 credits/s |
At the shortest length. Models that bill per video work out cheaper per second on longer clips.
Which should you choose?
Choose Kling 4.0 if
- you want the lower price per second
- you need clips longer than 15 seconds
- you want to guide motion with a reference video
- you want to keep a character or product consistent from reference images
Run Kling 3.0 and Kling 4.0 on the same prompt
One prompt, the same images, video and audio, up to 4 models at once. Each model is charged its own credits; failed videos are refunded.
Models to compare (2/4)
FAQ
Is Kling 3.0 or Kling 4.0 better?
It depends on the shot. Kling 4.0 has the lower starting price: 18 credits/s (720p, 3s) against 30 credits/s (720p, 3s) for Kling 3.0. At the same resolution the gap can be smaller; see the table below. Kling 4.0 makes longer clips: up to 30 seconds, Kling 3.0 up to 15. The fastest way to decide is to run your own prompt on both: the comparison tool sends the same prompt and references to each model at once.
Which is cheaper, Kling 3.0 or Kling 4.0?
A 5-second 720p Kling 3.0 video costs 150 credits; a 5-second 720p Kling 4.0 video costs 90 credits. Higher resolutions and longer clips cost more, and failed videos are refunded.
Can I use the same reference images with Kling 3.0 and Kling 4.0?
Kling 3.0: none. Kling 4.0: 9 images, 3 videos. On the comparison page, inputs a model can't take grey it out instead of sending a job that would fail.
Do Kling 3.0 and Kling 4.0 generate sound?
Kling 3.0: optional. Kling 4.0: none (silent video).
Which is better for vertical TikTok or Reels videos?
Both can make vertical video when 9:16 is in their aspect ratios. Kling 3.0: 16:9, 9:16, 1:1. Kling 4.0: auto, 21:9, 16:9, 1:1, 9:16. "Set by the model" means it frames the video from your input image.
Can I try Kling 3.0 and Kling 4.0 on the same prompt here?
Yes. The comparison tool on this page has both models selected: write a prompt, add the same images or reference video if you like, and press Generate. Each model is charged its own credits, and you can add up to two more models.
Sources
Specs and prices come from the models as offered in our generator (updated October 30, 2026). Makers' pages: Kling AI.