Per-second vs per-token video pricing: why Seedance moves

Seedance's price is a token price, so the same 10 seconds costs different amounts at different sizes, while Wan 3.0 and Omni Flash charge one rate per second at a tier. In Sume's pricing, video tokens are width x height x seconds x 24 fps / 1024, and the Seedance 2.5 rate is $0.0214 per 1,000 tokens at 480p and 720p, $0.0234 at 1080p (provider list, before the 1.25 margin).

Tokens per second and price

For a 16:9 frame:

Practical effect

Per-token pricing is why a per-second sticker on a Seedance listing is only an approximation: a 21:9 frame at 720p is 1470x630, a different token count from 1280x720. If you quote a client a Seedance price, quote it for the exact ratio and tier.

With a flat per-second row, the budget is seconds x rate. With Seedance, run the token formula once per frame size, then multiply by seconds. The video docs show pricing_skus per-1000-token rates in the catalog.