Technology
Seedance 2.0 in 4K Is Now on Kubeez
Seedance 2.0 in 4K is now on Kubeez: native 3840x2160 at 24fps, up to 15s, multimodal references and native audio. Generate true 4K AI video on web or API.
· Kubeez
Seedance 2.0 just crossed a line that matters: true, native 4K. Not an upscale, not a sharpening filter pass over a 1080p render, but a 3840 x 2160 frame generated at full resolution. And it is live on Kubeez right now, in both the web app and the MCP/API.
If you make video for a living, or you are trying to, this is the upgrade that changes what you can deliver. Here is what Seedance 2.0 in 4K actually is, what ByteDance built, and how to use it on Kubeez today.
What "native 4K" actually means
There is a meaningful difference between a model that outputs 4K and a model that generates in 4K. Plenty of pipelines render at 1080p and then run an upscaler to stretch the pixels. You get a bigger file, but you do not get more real detail. Edges stay soft, fine texture stays mushy, and the result falls apart on a large screen.
Seedance 2.0 generates natively at 3840 x 2160 at 24 frames per second, the standard 4K UHD resolution and the cinematic frame rate. Every feather, water droplet, fabric weave, and strand of hair is resolved at capture, not invented after the fact by an upscaler. That is the entire point: detail that holds up when someone watches it full-screen on a 4K TV, projects it, or crops into it in the edit.
Why this matters for real work:
- Client deliverables. Agencies and brands increasingly require 4K masters. You can now hand one over without an upscaling step that softens the image.
- Big screens and projection. Trade-show walls, in-store displays, and event screens punish low resolution. Native 4K survives them.
- Crop and reframe freedom. With four times the pixels of 1080p, you can punch in, reframe a vertical from a horizontal, or stabilize without visibly degrading the shot.
- Future-proofing. A 4K master ages well. You can always downscale a 4K file cleanly; you can never truly upscale a 1080p one.
Seedance 2.0 in 4K: the specs that matter
Seedance 2.0 is ByteDance's multimodal video generation model, built on a unified architecture that generates audio and video together. The 4K tier is the flagship: it runs on the standard Seedance 2.0 model, not the lighter Seedance 2 Fast tier.
Here is what the model brings, per ByteDance's spec:
| Capability | Seedance 2.0 |
|---|---|
| Native resolution | Up to 3840 x 2160 (4K UHD) |
| Frame rate | 24 fps |
| Clip length | Up to 15 seconds |
| Generation modes | Text-to-video and image-to-video (first and last frame) |
| Reference inputs | Up to 9 images + 3 videos + 3 audio clips in a single generation |
| Audio | Native audio and BGM generation, generated jointly with the video |
A few of these deserve a closer look.
Multimodal references in one shot. Most models let you condition on a single image. Seedance 2.0 accepts up to nine reference images, three reference videos, and three reference audio clips together. That is enough to lock a character's face, a product's exact look, a location, a motion style, and a soundtrack mood, all feeding one generation. It is a different level of creative control.
First and last frame. Image-to-video supports both a starting frame and an ending frame, so you can define exactly where a shot begins and where it lands. That turns the model from a slot machine into a directable tool.
Audio that is generated with the video, not bolted on. Because the architecture generates sound and picture jointly, the audio is tied to what is happening on screen rather than dropped on top afterward.
How to generate Seedance 2.0 in 4K on Kubeez
You have two ways in, and both point at the same model.
In the web app
- Open the video generation studio.
- Choose Seedance 2.0 as your model (the standard tier, not Fast).
- Select the 4K resolution option. 4K is a premium tier, so it costs more credits per generation than 1080p or 720p, but you are getting four times the pixels.
- Write your prompt, or attach a starting and ending frame for image-to-video, plus any reference images, clips, or audio you want the model to follow.
- Generate. Your finished 4K clip lands in your gallery, ready to download.
Via MCP and API
If you drive Kubeez from an agent or a script, the 4K Seedance 2.0 model is available through the Kubeez MCP and REST API. Call get_models to see the live model IDs and current pricing, then pass the 4K Seedance 2.0 model to generate_media with your prompt and any reference media. Because prices are credit-based and can change, always read the live rate from get_models or estimate rather than hardcoding it.
The same multimodal inputs apply over the API: pass your reference images, videos, and audio as source media and the model conditions on all of them.
When to reach for 4K (and when not to)
4K is the right call when the output will live somewhere unforgiving: a client master, a big screen, a hero shot you will reuse and crop. It costs more credits and takes longer to render than lower tiers, and that is a fair trade for finished, deliverable work.
For fast iteration, internal previews, or social clips that will be viewed on a phone, you do not need to spend 4K credits on every draft. A sensible workflow is to prototype at 720p or 1080p, lock your prompt and references, then render the final at 4K once you are happy with the result. If you want maximum speed while you experiment, Seedance 2 Fast covers the lower tiers, then switch up to the standard Seedance 2.0 model for the 4K master.
Where this sits in the bigger picture
Native 4K from a multimodal model that also generates its own audio is a genuine step up for AI video. ByteDance has signaled that the Seedance line is moving fast, with even longer native generations on the roadmap, so 4K is likely a floor rather than a ceiling for what these models will deliver. For now, it is here, it is real, and it is on Kubeez.
If you are weighing Seedance 2.0 against the other top models, these comparisons go deeper:
- Seedance 2 vs Veo 3.1: which AI video model wins in 2026?
- Seedance 2 vs Kling 3.0: benchmarks, features and value compared
- Why Seedance 2 is the best AI video generator in 2026
FAQ
Is Seedance 2.0's 4K real native resolution or an upscale?
It is native. Seedance 2.0 generates at 3840 x 2160 at 24 fps, so the detail is produced at full resolution rather than stretched up from a smaller render.
How long can a Seedance 2.0 clip be?
Up to 15 seconds per generation.
Does Seedance 2.0 generate audio?
Yes. Seedance 2.0 generates audio and BGM jointly with the video as part of its multimodal architecture.
How many reference inputs can I use at once?
Up to 9 images, 3 videos, and 3 audio clips in a single generation, across both text-to-video and image-to-video modes.
Is 4K available on the Seedance 2 Fast tier?
No. 4K is the flagship resolution and runs on the standard Seedance 2.0 model. Seedance 2 Fast covers the lower, faster tiers.
How do I access Seedance 2.0 in 4K on Kubeez?
Through the video generation studio in the web app, or via the Kubeez MCP and API. Pick Seedance 2.0, choose the 4K resolution, and generate.
Seedance 2.0 is built by ByteDance. Specifications above reflect ByteDance's published spec for the model. See ByteDance's official Seedance 2.0 page for the source.