Seedance 2.5 aspect ratio price: 1:1 is 12 cents cheaper at 480p only
On Sume, Seedance 2.5 costs the same in 9:16 and 16:9. Square 1:1 is cheaper only at 480p ($2.57 vs $2.69 for 10 s); at 720p and 1080p all three match.
The short answer
Aspect ratio changes the Sume price of a Seedance 2.5 clip in only one case: square 1:1 at 480p. A 10-second 480p clip is $2.69 in 9:16 or 16:9 and $2.57 in 1:1, a difference of 12 cents. At 720p ($5.78) and 1080p ($14.22) the three ratios cost the same. The comparison covers the three ratios that the price grid computes (9:16, 16:9, 1:1).
Seedance 2.5 price for a 10-second clip, by ratio
Seedance is priced per 1,000 video tokens ($0.0214 list), and the token count of a request depends on its output. Sume computes the exact billable amount for each request, so read the numbers instead of assuming linear price per second.
| Resolution | 9:16 | 16:9 | 1:1 | Saved by 1:1 over 100 clips |
|---|---|---|---|---|
| 480p | $2.69 | $2.69 | $2.57 | $12.00 |
| 720p | $5.78 | $5.78 | $5.78 | $0.00 |
| 1080p | $14.22 | $14.22 | $14.22 | $0.00 |
What this means for a batch
A batch of 100 ten-second 480p clips costs $269.00 in 9:16 or 16:9, and $257.00 in 1:1. The saving is $12.00. At 720p there is nothing to save: 100 clips are $578.00 whichever ratio you choose. At 1080p they are $1,422.00. So choose the ratio for the platform (vertical for Reels and Shorts, square for feeds), not for the price.
The same pattern holds on the other Seedance tiers in the grid. At 480p, a 10 s clip on Seedance 2.0 Mini is $0.88 in 9:16 and $0.84 in 1:1; on Seedance 2.0 it is $1.76 and $1.68. The 720p and 1080p rows are identical across the three ratios for every Seedance tier.
Shorter clips, same pattern
The 1:1 discount at 480p also shows in shorter clips. A 5-second 480p clip on Seedance 2.5 is $1.35 in 9:16 or 16:9 and $1.29 in 1:1, so 100 clips differ by $6.00. A 30-second 480p clip is $8.07 against $7.71, a gap of 36 cents. The percentage is about the same at every length, roughly 4 to 5 percent, so the saving grows with total seconds and not with the number of clips.
A 4-second clip is the shortest Seedance 2.5 accepts, and it follows the same rule: $1.08 in the two wide ratios and $1.03 in 1:1. If you make square 480p tests at volume, 1,000 four-second clips save 5 x 1,000 = $50.
Caveats
Seedance 2.5 also accepts auto, adaptive, 21:9, 4:3 and 3:4. The price grid used here covers only 9:16, 16:9 and 1:1, so this page makes no claim about the other ratios. Read GET /v1/videos/models for the live capabilities and the Video generation page for the request fields. The Video Router page lists model limits: Seedance 2.5 accepts 4 to 30 seconds at 480p, 720p and 1080p.
Sources
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Written by Sume