Divide by 1.25: recover the provider list rate from a Sume video price

To recover the provider list price behind a Sume video rate, divide the Sume per-second rate by 1.25. The Video API docs state that at submit Sume reserves provider list x 1.25 for each video model, minimax-h3-max included, and that usage.cost is the Sume billable amount. So seedance-2 at 720p, listed by Sume at $0.378 per second, corresponds to a provider list rate of $0.378 / 1.25 = $0.3024.

This is a back-of-envelope check on the structure of a bill, not a quote of any vendor's page. The division gives the list rate Sume starts from; whether a vendor currently publishes that figure is a separate question that only the vendor's own page can answer.

Seven rows worked out

Each row takes a Sume rate from the catalog as of 2026-10-09 and divides by 1.25. Rates are per output second at default options.

The markup in dollars on a 10-second clip

The share Sume adds is 20 percent of the Sume price, or 25 percent on top of list. For a 10-second seedance-2 720p clip the Sume price is 10 x $0.378 = $3.78, the implied list cost is $3.024, and the difference is $0.756. For a 10-second wan-3.0 720p clip it is $1.25 against $1.00, a $0.25 difference.

When you are pricing a client project, this is the number to carry: the markup scales with the clip, so a 600-second month of seedance-2 720p carries 600 x ($0.378 - $0.3024) = $45.36 of difference.

Where not to apply the division

The 1.25 factor is documented for the video models. Do not extend it to other lines without checking. Timeline render, video trim and the other fixed Sume jobs are priced by Sume in their own units and have no provider list behind them. Image lines are stated differently in the docs: the endpoint pricing lines already include the Sume margin, and you pay cost_usd x n.

For Modal-backed jobs such as video inspect or frame extraction, the docs describe the bill as container seconds x Modal list x 1.25 plus the platform fee, so the factor applies to a compute figure that you cannot read in advance. Those jobs reserve a ceiling and settle to what ran.

Using the division in a quote

If you resell generated video, the division tells you the cost basis behind each Sume rate and lets you set a client price with a known margin. At a 2x markup on Sume's price, a 10-second seedance-2 720p clip sells for $7.56 against a $3.78 Sume cost. The implied list figure is useful for sanity checks only; you are billed the Sume amount, and a vendor's list price can change without notice. When you need a vendor comparison for a specific model, read the vendor's own pricing page on the day you decide and cite the date.