A $200 top-up at 2 clips per weekday: how many weeks each model lasts

A content calendar of two 12-second clips per weekday spends $6.00 a day on Wan 3.0 at 1080p and $13.8672 a day on Seedance 2.5 at 720p. A $200.00 top-up therefore lasts 33 working days on Wan 3.0 (6 weeks and 3 days) and 14 working days on Seedance 2.5 (2 weeks and 4 days).

The numbers below use one clip price per model, so they hold only while you stay on one resolution and length. Mixing in retries shortens every runway.

Runway table

Daily spend = 2 x clip price. Weekly = 5 x daily. Working days = $200 divided by daily spend, rounded down. Seedance rows are 9:16.

Add a retry allowance

If one clip in four is re-rolled, you pay for 2.5 clips a day instead of 2, so the runway divides by 1.25. Wan 3.0 at 1080p then lasts 26 working days instead of 33.

The gap between models is the real planning input. MiniMax H3 Max at 1080p ($2.40 per 12-second clip) stretches the same $200 to 41 working days, but 1080p there is a latent refinement of a native 768p render, so compare pictures before you compare days.

What a draft per clip does to the runway

Adding one 480p Wan 3.0 draft before every 1080p final costs $0.75 per draft for a 12-second clip. Two clips a day then cost $7.50 instead of $6.00, and the $200.00 top-up lasts 26 working days instead of 33. Drafts are not free runway: they pay off only if they stop final re-rolls that would cost more than $0.75 each.

A simpler lever is length. Because Wan 3.0 is billed per second, trimming each clip from 12 to 10 seconds cuts the per-clip price by one sixth with no change to the calendar.

Track it with the API

A top-up is a dashboard action, not an API call, so the loop is: top up in Billing & subscription, then read the balance from your scheduler and divide by the day's spend.

import os, requests

H = {"Authorization": f"Bearer {os.environ['SUME_API_KEY']}"}
r = requests.get("https://api.sume.com/v1/balance", headers=H, timeout=30)
r.raise_for_status()
micros = r.json()["data"]["balance"]["available_amount_usd_micros"]
print(f"balance: ${micros / 1_000_000:.2f}")
daily = 2 * 3000000  # two Wan 3.0 1080p 12 s clips, in micros
print("working days left:", micros // daily)

Gotchas

• The ledger shows reservations, captures, refunds, top-ups and grants; a reserved clip is held, not yet spent.
• Credit lots can expire: GET /v1/balance reports expiration with the next expiring amount, so read it before you plan weeks ahead.
• Weekend runs, 480p tests and retries are not in the table.