Video comparedUpdated 25 Oct 2026

Kling 4.0 vs Kling 3.0

Kuaishou's new model against its workhorse. One runs to 30 seconds, the other has every switch.

Video: fal

Kling 4.0

from 131 credits per 5s

Video: Kling AI

Kling 3.0

from 117 credits per 5s

Try both free

Both on starter and up. One plan, one pool of credits.

The short answer

Pick Kling 4.0 when the take has to run past 15 seconds, up to 30, when the frame is 21:9, or when you want sound at 720p, where it is the cheaper of the two: 131 credits per 5 seconds against 140. Pick Kling 3.0 for 1080p on a budget, because its 1080p costs the same as its 720p (140 credits per 5 seconds with sound, against 196 on Kling 4.0), and whenever you need a silent clip, automatic multi-shot or a prompt adherence control, none of which Kling 4.0 has. Both take start and end frames, and on APImage both run on the Starter plan from one pool of credits.

Side by side

Kling 4.0 vs Kling 3.0: specifications and prices on APImage
Spec	Kling 4.0	Kling 3.0
Provider	Kuaishou	Kuaishou
Resolution	720p, 1080p	720p, 1080p, same price
Length	3 to 30 seconds	3 to 15 seconds
Aspect ratios	16:9, 9:16, 1:1, 21:9	16:9, 9:16, 1:1
Audio	Stereo, always on	On or off
Start and end frames	Yes	Yes
Automatic multi-shot	No	Yes
Prompt adherence control	No	Yes
Prompt length	26,000 characters	2,500 characters
5s at 720p, with sound	131 credits	140 credits
5s at 1080p, with sound	196 credits	140 credits
5s silent	Not available	117 credits
Plan on APImage	Starter and up	Starter and up

Prices in APImage credits, quoted from the app on 25 Oct 2026. A tick marks the edge; rows without one simply differ.

Head to head

Round by round: who takes it, and why.

Kling 4.0

Takes 2 of 4

Kling 3.0

Takes 1 of 4

Length
Kling 4.0
Kling 3.0
Kling 4.0 takes it. Kling 4.0 renders up to 30 seconds in one generation, twice Kling 3.0's 15. A scene can set up and pay off without a second clip.
Formats
Kling 4.0
Kling 3.0
Kling 4.0 takes it. Kling 4.0 adds 21:9 for a widescreen cinema frame. Both do landscape, portrait and square.
Control
Kling 4.0
Kling 3.0
Kling 3.0 takes it. Kling 3.0 can render silent, cut between angles on its own and follow the prompt more or less literally. Kling 4.0 always renders sound and has neither setting.
Price
Tie
Tie
With sound at 720p, Kling 4.0 is slightly cheaper: 131 credits per 5 seconds against 140. At 1080p Kling 3.0 is, 140 against 196, because its 1080p costs the same as its 720p.

Neither takes every round. That is why both are in the same APImage plan.

Which one?

Kuaishou

Pick Kling 4.0 if

The take runs longer than 15 seconds.
The frame is 21:9.
Every clip needs sound and 720p is enough.
The prompt is a long shot brief.

Try Kling 4.0 Model details

Kuaishou

Pick Kling 3.0 if

You want 1080p at the lowest price.
The clip should be silent.
You want automatic cuts between angles.
You want to set how literally the prompt is followed.

Try Kling 3.0 Model details

Why pick one?
Run both.

Kling 4.0 and Kling 3.0 sit in the same APImage studio and draw on the same credits. Switching between them is a dropdown, not a second subscription.

One subscriptionOne credit poolSame prompt, both modelsNo per-model surcharge

Try both free

1
Block the scene on Kling 3.0, silent, from 117 credits per 5 seconds.
2
Render the long take on Kling 4.0 from the same start frame, up to 30 seconds with stereo sound.
3
Cut both together in the editor. One plan, one credit pool, no second subscription.

Straight answers

Is Kling 4.0 better than Kling 3.0?

It goes further: 30 seconds instead of 15, a 21:9 frame and stereo sound in every clip. Kling 3.0 still wins on 1080p price and on control, with a silent option, automatic multi-shot and a prompt adherence slider.

Which is cheaper, Kling 4.0 or Kling 3.0?

It depends on the resolution. At 720p with sound Kling 4.0 is, 131 credits per 5 seconds against 140. At 1080p Kling 3.0 is, 140 against 196. Only Kling 3.0 renders silent, from 117 credits per 5 seconds.