One 30 s Seedance 2.5 job vs two 15 s Mini jobs: cost and trade-offs
A 30-second Seedance 2.5 clip costs more than two 15-second Mini clips on Sume. The numbers at 480p, 720p and 1080p, and what two jobs cost you in continuity.

At 720p, one 30 s Seedance 2.5 job costs $17.334; two 15 s Seedance 2 Mini jobs cost $5.67 for the same 30 seconds of footage. Mini's range ends at 15 s, so reaching 30 seconds on it means two jobs and an assembly step.
Same 30 seconds, two ways
| Resolution | 1 x 30 s on 2.5 | 2 x 15 s on Mini | 2 x 15 s on Fast | Mini saving |
|---|---|---|---|---|
| 480p | $8.0603 | $2.6366 | $4.2185 | $5.4238 |
| 720p | $17.334 | $5.67 | $9.072 | $11.664 |
| 1080p | $42.6465 | $12.7575 | $20.412 | $29.889 |
What the saving does not include
Two jobs are two separate generations. A subject, light and motion that match across the cut are your job, not the API's; Sume's Seedance ids take no seed, so you cannot pin the second job to the first. You also need to join the clips, which Timeline 1.0 does at $0.10 per output minute (rounded up).
The ratio
At 720p the single 30 s job costs 3.06 times the Mini pair ($17.334 against $5.67) and 1.91 times the Fast pair ($17.334 against $9.072). At 1080p the Mini gap widens to 3.34 times ($42.6465 against $12.7575).
A rule of thumb
- One continuous move or a single scene: one 30 s job on seedance-2.5.
- Two beats that can cut: two 15 s jobs on any tier.
- Budget first: Mini pair, then re-render the keepers.
Sources
Related posts
More in Comparisons
- Seedream 4 or Seedream 4.5 on Sume: 3.25 vs 5 cents per image
Seedream 4 bills $0.0325 and lists aspect ratio auto. Seedream 4.5 bills $0.05 and does not. Same n, references and formats. What the extra 1.75 cents buys.
- Speech-to-text per hour: Sume $0.60 batch vs MAI streaming $0.54
Sume STT is batch at $0.01 per audio minute, $0.60 an hour. MAI-Transcribe-2-Streaming lists $0.54 an hour through year end. Different products; the math.
- Sume Format vs pasting the same prompt each time: what changes
A Format stores the house style once, then each API run sends only inputs. How the instruction is composed, what a run returns, and the spend cap.
- Swapping a face in a 12-second clip: manual steps vs one request
What changing a face in a short clip involves when you do it yourself, and what Sume's beta face-swap request replaces. Fields, limits and the cost ceiling.
Written by Sume