$87.40 wallet runway: three 5-second 1080p clips a day, by model

At three 5-second clips a day at 1080p, an $87.40 Sume balance lasts 4.1 days on Seedance 2.5 and 31.1 days on Gemini Omni Flash 1.1. The clip price decides the runway: 3 x 5 = 15 seconds a day, and the per-second price at 1080p ranges from $0.1875 to $1.42155. Runway in days is the balance divided by the daily burn.

Burn rate by model

Each row is 15 seconds of 1080p video a day. The balance is hypothetical; replace it with your GET /v1/balance reading.

Make the number operational

Divide the balance by the daily burn and alert at 5 days, not at zero. Sume rejects a submit with 402 insufficient_credits when it cannot reserve the estimated amount, so a wallet can look healthy and still refuse the next 1080p job. At $87.40, three simultaneous Seedance 2.5 1080p jobs of 10 seconds each ($14.2155 each, $42.6465 in total) leave $44.7535; a fourth leaves $30.54 and so on until the balance is under one job.

Retakes shorten the runway in proportion. A 50 percent keeper rate halves every figure in the table: the Seedance 2 row goes from 6.9 to 3.4 days.

One week of burn

Over seven days, the same schedule burns $149.26 on Seedance 2.5 (7 x $21.32325), $89.30 on Seedance 2 (7 x $12.7575), $26.25 on Wan 3.0, $21.00 on MiniMax H3 Max and $19.69 on Omni Flash. An $87.40 balance covers a week only on the last four.

Use that to set a refill rule: top up when the balance falls below three days of burn. For Seedance 2.5 at this schedule three days is $63.97, so $87.40 gives you a margin of only $23.43 above the refill line.

Remember that these are list prices for default options. If you add extras or switch aspect ratio, read the estimate that the submit returns before you extrapolate.

Choosing a model by runway

If the plan is a daily post for a month, 30 days of 1080p video at 15 seconds a day needs 30 x $2.8125 = $84.38 on Omni Flash 1.1. It needs 30 x $21.3233 = $639.70 on Seedance 2.5. Neither is better in general; they are different products with different price tags.

Reading the table honestly

The runway numbers assume that every clip is kept, every clip is exactly 5 seconds and the price does not change. Treat them as an upper bound on days.

• A 60 percent keeper rate scales every row by 0.6: Seedance 2.5 runway falls from 4.1 to 2.5 days.
• A switch from 1080p to 720p on Seedance 2.5 changes the daily burn from $21.32 to 15 x $0.5778 = $8.67 per day, which is 10.1 days of runway.
• Price changes land in the catalog; re-run the table with the live numbers when you refill.