Seedance 2.5 API opens, landing on Runway, Krea and Pika
ByteDance switched on public API access for its 30-second video model, and Western creative platforms shipped it to users within hours of each other.
From demo to distribution
ByteDance opened public API access to Seedance 2.5 on 7 August, and the model appeared almost simultaneously inside a row of Western creative platforms. Runway announced availability first, followed within roughly ninety minutes by Krea, the agentic design tool Lovart, and Pika, which folded the model into its recently launched API membership at a steep discount. Several other platforms — among them Magnific, Yapper and YouArt — have announced integrations of their own, while ByteDance's Volcano Engine has been signing up Chinese apps directly. The model itself was unveiled on 31 July, but at that point it ran only inside ByteDance's own consumer apps — Jimeng and Doubao — with programmatic access listed as forthcoming. This week closed that gap.
The capability set is what makes the distribution notable. Seedance 2.5 generates up to 30 seconds of continuous audio-video in a single pass rather than stitching short clips, and it can organise multiple logically connected shots inside that span, so a sequence can carry setup, development and resolution without an editor intervening. It accepts as many as 50 reference inputs per generation — up to 30 images, 10 video clips and 10 audio clips — and supports timestamp-level editing of both picture and sound, alongside green-screen output and camera-angle adjustment.
Pricing and positioning
Resellers list the model in the region of nine cents per second of output at lower resolutions, with token-based rates differing depending on whether video is supplied as input. That places it in direct competition with the incumbent Western video models on the same platforms that now host all of them side by side.
Why it matters
The significant fact is not the model but the channel. A Chinese lab's flagship video model became, in the space of a single morning, a first-class option inside the tools most Western creators actually use — including platforms that build their own models. Video generation is consolidating into a thin layer of interface companies buying capability wholesale, and on this cycle the wholesale supplier was ByteDance. For rivals in the US and Europe, the competitive question shifts from whose model is better to whose model is cheap and available everywhere at once.