ByteDance Seedance 2.5 API Costs 53% More Per Token Than 2.0, Lacks 1080p and 4K

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ByteDance will open the Seedance 2.5 video generation API on August 7, with pricing already published ahead of launch. The new model costs approximately 53% more per million tokens without video input and about 49% more with it compared to Seedance 2.0. Only 480p and 720p resolutions are available for 2.5, with 1080p, 4K, and offline inference listed as not yet supported. A technical analysis of ByteDance's own worked examples reveals that Seedance 2.5 renders 480p at a true 854×480 frame, roughly 4.5% fewer pixels than the slightly taller frame used in 2.0, which explains why the per-second cost rise appears lower than the per-token rate increase. Developers and resellers using 2.0 cost models should also note an undisclosed minimum input duration of around four seconds, meaning short reference clips may cost more than straightforward calculations suggest.

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