WAN 3.0 vs Seedance 2.5: 30-Second Shots Compared

WAN 3.0 and Seedance 2.5 are the two models on VdoBloom that advertise a 30-second shot, and each wins a different race. WAN 3.0 is cheaper per second at every resolution and stays cheaper on a matched 30-second 720p clip, while Seedance 2.5 offers six aspect ratios including 21:9, @Image1 and @Image2 reference tagging, and a 30,000-character prompt cap. Neither is open source, and both stop at the same 30-second ceiling.

Updated October 2026.

Two long-take models, two philosophies

WAN 3.0 is Alibaba’s newest Wan generation, released in August 2026. One model handles text or image input, durations run from 2 to 30 seconds with every whole second selectable, and 30 seconds is double the 15-second cap that Wan 2.6 and 2.7 carried. It generates audio natively alongside the picture and carries a HOT content label, the platform’s most permissive filtering tier. There is a fuller WAN 3.0 walkthrough if you want the setup detail.

Seedance 2.5 is ByteDance’s newest Seedance release. It runs from 4 to 30 seconds, also at every whole second, across 480p, 720p and 1080p, with the 10-bit 1080p tier added in August 2026. It generates from a text prompt, a starting image, or up to two reference images tagged @Image1 and @Image2 in the prompt, and audio is generated by default at no extra charge. It also carries a HOT label, and its prompt field accepts up to 30,000 characters.

WAN 3.0 vs Seedance 2.5 comparison table

Spec	WAN 3.0	Seedance 2.5
Durations	2 to 30s, every whole second	4 to 30s, every whole second (27 options)
Resolutions	480p, 720p, 1080p	480p, 720p, 1080p; no 4K
Aspect ratios	Five: 16:9, 4:3, 1:1, 3:4, 9:16	Six, including 21:9 cinema-wide
Audio	Generated natively with the picture	Generated by default at no extra charge
Content label	HOT	HOT
Per-second credits	~3.2-3.5 at 480p, 6.4-6.7 at 720p, 12.8-13 at 1080p	~11.2 at 480p, 25.2 at 720p, 63.2 at 1080p (plain generation)
Worked 5s 720p	32 credits	126 credits
Worked 30s 720p	192 credits	756 credits
Reference input	Text or image in one model; no first-and-last-frame documented	Text, a starting image, or up to two reference images tagged @Image1 and @Image2
Billing quirks	A Prime tier costs more; the 2s 480p test is the cheapest entry at 7 credits	Reference-video mode bills input plus output duration together, capped at 30 input seconds
Open source	No, weights unpublished	No

Cost at matched settings

At a matched 5-second 720p clip, WAN 3.0 is 32 credits and Seedance 2.5 is 126. Stretch both to 30 seconds at 720p and WAN 3.0 lands at 192 credits while Seedance 2.5 reaches 756. The gap holds at every resolution: WAN 3.0 sits in the low single digits per second at 480p, and Seedance 2.5 sits above 11 credits per second at the same resolution. On WAN 3.0 the cheapest possible run is a 2-second 480p clip at 7 credits, which makes it a genuinely disposable test; the equivalent throwaway on Seedance 2.5 costs far more.

Seedance 2.5 has one wrinkle worth reading before you commit, and it is set out in the Seedance 2.5 pricing notes. Its optional reference-video mode is billed at a lower per-second rate, about 6.8 at 480p and 15.2 at 720p, but the provider charges the input duration and the output duration together, capped at 30 input seconds, and VdoBloom measures the uploaded clip’s real length automatically. A 5-second 720p output built from a 10-second reference clip costs about 228 credits — nearly double the 126 credits for plain generation. The lower headline rate does not mean a lower bill.

WAN 3.0 has its own twist. A faster tier, WAN 3.0 Video Prime, keeps identical durations, resolutions, ratios and audio but costs more per second: about 4.9-5 at 480p and 10-10.5 at 720p, so a 5-second 720p clip that costs 32 credits on the base model costs 51 on Prime. First-and-last-frame control also stops at Wan 2.7 and is not documented on WAN 3.0 itself, so if you rely on pinning both ends of a shot, check the model you selected before you plan around it.

Audio

Both models generate sound with the picture, so a clip comes back with audio without a separate pass. WAN 3.0 produces audio natively inside the generation; Seedance 2.5 generates audio by default and does not charge extra for it. If your edit needs dialogue-grade sound you should still plan a dedicated audio pass, but for ambience, room tone and effect-led clips either model saves a step. Confirm the ambience you expect on a short test first, and the cheapest WAN 3.0 run is a 2-second 480p clip at 7 credits.

Aspect ratio and input modes

WAN 3.0 gives you five ratios: 16:9, 4:3, 1:1, 3:4 and 9:16. That covers vertical social, square, classic and widescreen. Seedance 2.5 gives you six and adds 21:9 cinema-wide, the one ratio WAN cannot match — useful when a project needs a scope frame without cropping in post.

Input modes differ more than the table suggests. WAN 3.0 is one model that accepts text or a single image. Seedance 2.5 accepts text, a single starting image, or up to two reference images tagged directly in the prompt as @Image1 and @Image2, and its prompt field accepts up to 30,000 characters. If a shot needs two recurring characters or a specific brand object held consistent across a long take, that tagging is a real capability advantage rather than a decoration.

How to choose between them

Let the budget and the frame decide. If you generate long clips in volume, or the shot needs to be 30 seconds and the ratio is conventional, WAN 3.0’s per-second price and its cheap 2-second 480p entry make it the economical run. If the shot needs a 21:9 frame, two tagged reference images, or a very long shot description, Seedance 2.5 is the model that can do the job.

There is no overall winner, and it is worth saying so plainly. WAN 3.0 is cheaper per second. Seedance 2.5 has six ratios including 21:9, reference tagging with @Image1 and @Image2, and a 30,000-character prompt cap. Both are HOT-labelled, both produce audio, and both cap at 30 seconds.

Common mistakes

Assuming Seedance 2.5’s reference-video mode is cheaper. The lower per-second rate applies to input plus output duration, so a long reference clip can roughly double the bill.
Expecting 4K from either model. Neither reaches it; within the Seedance family, only Seedance 2 goes to 4K.
Treating WAN 3.0 Video Prime as a free upgrade. It looks identical but costs more at the same settings.
Planning a shot longer than 30 seconds on either model. That is the shared ceiling.
Burning 756 credits on a 30-second 720p Seedance 2.5 clip to test a concept a cheap low-resolution run would have settled.
Forgetting that the price is shown before every generation, and that a failed run is refunded rather than charged.

Frequently asked questions

Which is cheaper, WAN 3.0 or Seedance 2.5?

WAN 3.0 is cheaper per second at every resolution. A 5-second 720p clip is 32 credits on WAN 3.0 against 126 on Seedance 2.5, and a 30-second 720p clip is 192 against 756.

Do both models reach 30 seconds?

Yes. WAN 3.0 runs 2 to 30 seconds and Seedance 2.5 runs 4 to 30 seconds, both selectable at every whole second, so 30 seconds is the shared ceiling.

Which has more aspect ratios?

Seedance 2.5. It offers six ratios including 21:9 cinema-wide, while WAN 3.0 offers five: 16:9, 4:3, 1:1, 3:4 and 9:16.

Does either model generate audio?

Both do. WAN 3.0 generates audio natively with the picture, and Seedance 2.5 generates audio by default at no extra charge.

Is either model open source?

No. Alibaba has not published WAN 3.0’s weights, and neither model can be installed locally, so both run through VdoBloom’s hosted access with no GPU needed.

Start with a cheap low-resolution test on either model, then scale the one that fits the shot. Open the Seedance 2.5 tool to run a clip, or check credit pricing before you commit to a long take.