ByteDance's Seedance 2.5 dropped June 23 with native 30-second 4K, 50 multimodal refs, and unified joint audio-video. The spec bumps got all the attention. The bigger shift for marketers is the access and licensing posture, which determines whether you can actually ship anything this quarter.
Three weeks, one skincare client, 24 ad variants at $40 compute. A field-tested look at what ByteDance's Seedance 2.0 actually changes for paid ad creative — and where it still falls short.
