Video model comparisonKling 4.0vsSeedance 2.5

Two one-take models, compared on what you can set and what it costs.

15 free credits to start, no card needed. In AIFACECRAFT, Seedance 2.5 is on the Premium and Ultra plans.

Behind the title: Rush Hour, made with Kling 4.0.

The short answer

Both make one take of up to thirty seconds with sound. Kling 4.0 steers the shot through keyframes; Seedance 2.5 takes far more references and extends a clip.

In AIFACECRAFT, from the Studio’s own settings

Head to head.

Longest clip: Kling 4.0: 30 s; Seedance 2.5: 30 s
Keyframes between first and last: Kling 4.0: 8; Seedance 2.5: —
Reference images: Kling 4.0: 10; Seedance 2.5: 30
Reference videos: Kling 4.0: 4; Seedance 2.5: 10
Top resolution: Kling 4.0: 1080p tier; Seedance 2.5: 1080p tier
Sound: Kling 4.0: Always on; Seedance 2.5: Your choice
Edit or extend: Kling 4.0: Edit; Seedance 2.5: Edit, Extend
Credits, 8 s at top resolution: Kling 4.0: 47; Seedance 2.5: 117

Longer bars mean more, except credits, where the shorter bar costs less. Your plan’s benefits apply in the Studio, which shows the exact cost before you generate. In AIFACECRAFT, Seedance 2.5 is on the Premium and Ultra plans.

As announced.

What each developer says about its own model. AIFACECRAFT may offer a subset; the head-to-head above shows what you can set here.

Kling 4.0 and Seedance 2.5 as announced by their developers, checked October 31, 2026
Feature	Kling 4.0	Seedance 2.5
Developer	Kuaishou (Kling AI)	ByteDance Seed
Released	October 15, 2026	July 31, 2026
Length per generation	3 to 30 s	Up to 30 s in one pass
Top resolution	Up to 4K in Kling’s table; its Kling 4.0 page marks native 1080p and 4K as coming soon	Not stated by ByteDance Seed; Dreamina’s pages say up to 4K
Sound	Two-channel stereo, generated with the picture	Audio and video generated jointly, in sync
Frame control	First and last frame, up to 10 keyframes	Not stated in the launch post
References	Up to 10 images, 7 subjects and 5 videos (30 s combined)	Up to 30 images, 10 videos and 10 audio clips
Edit and extend	Edits up to five clips (30 s combined); extension to 2 minutes in total	Timestamp-level editing and multi-round extension
Where to use it	Kling AI web and apps, AIFACECRAFT	Jimeng AI and Doubao, Dreamina and CapCut, AIFACECRAFT

Sources, checked October 31, 2026: Kling AI: Kling 4.0 vs Kling 3.0 · Kling AI: Kling 4.0 page · Kling AI blog: Kling 4.0 rolled out to all users on October 15 · ByteDance Seed: Introducing Seedance 2.5 · Dreamina: Seedance 2.5 vs 2.0. Prices and features change; check each site before you buy.

Where each wins.

Choose Kling 4.0 for

The shot has to pass through set moments: keyframes between the first and last frame.
You want to edit an existing clip with reference images.
You want sound the developer describes as two-channel stereo.
Fewer credits for the same 8-second clip in AIFACECRAFT (47 against 117).

Kling 4.0 guide

Choose Seedance 2.5 for

You work from many references at once, images and videos.
You want to extend a clip you already made.
You want a 480p draft before the final take.

Seedance 2.5 guide

Questions, answered.

Is Kling 4.0 better than Seedance 2.5?

Neither is better at everything. Kling 4.0 adds keyframes between the first and last frame; Seedance 2.5 accepts far more reference images and videos and can extend a clip. Both make up to 30 seconds with sound in one pass.

Which is cheaper in AIFACECRAFT?

For a 8-second clip with sound at each model’s top resolution, Kling 4.0 costs 47 credits (1080p tier) and Seedance 2.5 costs 117 credits (1080p tier) in AIFACECRAFT, so Kling 4.0 is the lower-cost choice for that clip. Your plan’s benefits apply, and the Studio shows the exact cost before you generate.

Can I use both in one place?

Yes. Both are in the AIFACECRAFT Video section, so you can make the same brief with each and keep the better take.