Seedance 2.5's 4-second minimum costs $1.07 at 480p 9:16

The shortest Seedance 2.5 clip on Sume, 4 seconds at 480p in 9:16, costs $1.074709, which is already over the $1.00 default cap of a scheduled run. Seedance is token-priced, so the total depends on resolution, seconds and aspect ratio rather than a flat per-second rate.

Three price points

Seedance 2.5 accepts 4 to 30 seconds at 480p, 720p and 1080p. The rows below come from the Sume price tool at 9:16; the per-second figure is the total divided by seconds.

What to do instead

Use a model with a flat rate for a scheduled run on the default cap, such as Wan 3.0 at 480p ($0.0625 per second, 16 seconds for $1.00), or raise the schedule's cap where you author it. An API caller cannot raise it per run:

curl -sS -X POST "https://api.sume.com/v1/actions/$ACTION_ID/runs" \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{"generation_spend_cap_usd": 5}'

Limits and gotchas

The request above sends 5, but the API clamps a number to min(request, schedule cap), so a $1.00 schedule still runs at $1.00. This is by design, so a caller cannot spend past the cap its owner set.

• 0 is a 400, and null runs without the automation ceiling.
• Seedance 2.5 prices move with aspect ratio; rerun the price for 16:9 before you budget.
• The Developer API cannot edit a schedule, so a cap change is made by whoever owns the schedule.