Both make videos up to 30 seconds with sound. Kling 4.0 costs about half as much per second at 720p and adds keyframes; Seedance 2.5 takes more reference files (30 images against 10) and followed camera directions more closely in our tests.
Below, the same three prompts run on both models, so you can see how each one reads a prompt.
How do Kling 4.0 and Seedance 2.5 compare on the same prompt?
Seedance 2.5 followed camera directions and the shallow depth of field more closely. Kling 4.0 gave brighter, cleaner shots that show more of the scene, and its camera moves were easier to see.
Text to Video, 5 seconds, 720p, 16:9, with sound. Each prompt ran once on each model, and the videos are shown as generated, with no editing. The Seedance 2.5 videos are the same ones as in Seedance 2.5 vs 2.0. Turn the sound on to compare the audio.
Fast action
Tests: Big motion, physics and a tracking camera.
Kling 4.065 creditsSeedance 2.5120 credits
Both landed the trick in one continuous shot. Kling 4.0 frames the whole rider: he drops in from the top of a ramp, rolls across the park, ollies off a ledge and rides away, with the camera following from a distance instead of low to the ground, and a drop rather than a gap. Seedance 2.5 follows the camera direction more closely, with the lens at board height through the crouch, the pop, the board in the air and the landing.
Prompt used for both
A skateboarder in a red hoodie rolls down an empty concrete ramp at sunset, pops an ollie over a gap and lands cleanly. The camera tracks alongside low to the ground, then rises as he lands. Long shadows, golden light, the sound of wheels on concrete and a clack on landing. Realistic motion.
Talking to camera
Tests: Face, lip sync and the spoken line.
Kling 4.065 creditsSeedance 2.5120 credits
Both kept the curly hair, the green shirt and the kitchen, and she talks through the whole clip. Kling 4.0 gives a bright, clean picture with even daylight and a white kitchen, but the camera hardly moves, so it reads as a locked-off shot rather than handheld. Seedance 2.5 has low warm sun through the window and a slight handheld sway. Turn the sound on to compare the voices.
Prompt used for both
Medium close-up of a woman in her thirties with short curly hair and a green linen shirt, standing in a bright home kitchen. She looks into the camera, smiles and says: "I tried this for a week, and honestly, I'm not going back." Natural handheld camera, warm daylight, realistic skin texture, clear voice with light room tone.
Product shot
Tests: Lighting, depth of field, steam and a slow camera move.
Kling 4.065 creditsSeedance 2.5120 credits
Kling 4.0 makes the sideways glide from the counter to the windows easy to see, with steam rising the whole time, but keeps the people behind the mug fairly sharp instead of the shallow depth of field the prompt asked for, and a green lens flare crosses the mug for about a second. Seedance 2.5 has the softer, more cinematic look: a strongly blurred room, warm bokeh lights and a long shadow, with a gentler camera move. Neither drew the gold rim.
Prompt used for both
A matte black ceramic coffee mug with a thin gold rim sits in the middle of a wide light oak table in a busy café in the morning. Medium-wide shot at table height: the table fills the foreground and the mug sits in the lower center of the frame. Low morning sun shines in from large windows behind the mug, backlighting it and casting a long soft shadow across the wood grain toward the camera. Behind, out of focus, customers chat at other tables, warm round bokeh lights glow above the counter, and green plants sit by the windows. Steam curls up from the coffee. The camera glides slowly sideways, so the blurred background drifts from the counter to the bright windows. Shallow depth of field, warm golden light, cinematic. Café ambience: soft chatter and the clink of cups. No text.
Kling 4.0 vs Seedance 2.5 specs
Kling 4.0 is cheaper and has keyframes and subjects; Seedance 2.5 has more room for reference files and a 480p option. The rows below are the limits and rates on VisionMorphic as of October 27, 2026. More on each model: Kling 4.0, Seedance 2.5.
Feature
Kling 4.0
Seedance 2.5
Length of one video
3–30 seconds
4–30 seconds
Resolutions
720p, 1080p
480p, 720p, 1080p
Aspect ratios
Auto, 16:9, 9:16, 1:1, 21:9
Auto, 16:9, 4:3, 1:1, 3:4, 9:16, 21:9
Frames you can set
Start, up to 8 keyframes, end
Start and end
Reference images
Up to 10
Up to 30
Reference videos
Up to 5, 30 seconds in total
Up to 10, 30 seconds in total
Reference audio
Up to 3 voice clips to speak in
Up to 10, 30 seconds in total
Subjects (named characters or objects)
Up to 7
No
References per video
Up to 15 in total
Each limit above on its own
Sound
Always on
On or off
Credits per second
13 at 720p, 19 at 1080p
12 at 480p, 24 at 720p, 60 at 1080p
A 5-second 720p video
65 credits
120 credits
Should I use Kling 4.0 or Seedance 2.5?
Use Kling 4.0 to stretch your credits and to control the shot with keyframes. Use Seedance 2.5 for reference-heavy videos, close camera directions and a cinematic look.
Pick Kling 4.0 when
You want more videos for your credits: at 720p it costs about half as much per second.
You want to set the moments in between with up to 8 keyframes, not only the start and end frame.
You want named subjects, or a voice clip for a character to speak in.
You want a bright, clean look with the whole scene in view, as in the tests above.
Pick Seedance 2.5 when
You have many reference files: up to 30 images, 10 videos and 10 audio clips.
You give close camera directions, like a low tracking shot, and want them followed closely, as in the action test above.
You want a softer, cinematic look with shallow depth of field.
You need 480p drafts, or a video without sound.
Questions
Is Kling 4.0 better than Seedance 2.5?
Neither wins everywhere. In our three same-prompt tests, Seedance 2.5 followed camera directions and shallow depth of field more closely, and Kling 4.0 gave brighter, cleaner shots with more of the scene in view. Kling 4.0 also costs less per second and adds keyframes; Seedance 2.5 takes more reference files. Watch the tests on this page and judge for your own shots.
Which is cheaper, Kling 4.0 or Seedance 2.5?
Kling 4.0 at 720p: 13 credits per second against 24 for Seedance 2.5. At 1080p it is 19 against 60. Seedance 2.5 also has 480p at 12 credits per second. With a reference video, both models also bill the reference length at a lower rate.
Which makes longer videos, Kling 4.0 or Seedance 2.5?
Both go up to 30 seconds in one generation. Kling 4.0 starts at 3 seconds and Seedance 2.5 at 4.
Can I try Kling 4.0 or Seedance 2.5 for free?
New accounts get 40 free credits. That covers a 3-second 720p Kling 4.0 video (39 credits). The shortest Seedance 2.5 video needs 48 credits, so Seedance 2.5 needs a credit pack or a paid plan.
Do Kling 4.0 and Seedance 2.5 support 4K?
Not here: both go up to 1080p on VisionMorphic. Kling 4.0 makes 4K in the Kling app; for 4K on VisionMorphic, use Kling 3.0 Omni.
Is this an official Kling or Seedance page?
No. VisionMorphic is an independent video generator. It is not affiliated with or endorsed by Kuaishou, Kling AI or ByteDance.
Run your own prompt on both
Keep the prompt, resolution and length the same on both models, so the model is the only thing that changes. Both are in the same generator and use the same credits.