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ByteDance's Seedance 2.5 breaks the 30-second barrier for AI video generation

ByteDance unveiled Seedance 2.5, an AI video model capable of generating single clips up to 30 seconds long with scene changes and tempo shifts, at its Volcano Engine FORCE conference. The model, launching in early July, can process up to 50 additional inputs and supports post-generation editing while maintaining visual style. ByteDance also introduced four other AI models, including Seedance 2.0 with native 4K support and the Doubao 2.1 Pro language model, which costs 80% less than Claude Opus 4.6.

read1 min views5 publishedJun 23, 2026
ByteDance's Seedance 2.5 breaks the 30-second barrier for AI video generation
Image: The Decoder

ByteDance introduced five new AI models at Volcano Engine's FORCE conference. The centerpiece is Seedance 2.5, a video model set to launch in early July.

Volcano Engine is ByteDance's cloud business, which offers the company's AI models as services for enterprises. The new model generates single video clips up to 30 seconds long without any post-stitching, complete with scene changes and tempo shifts. It can process up to 50 additional inputs at once - reference images, audio, and more - useful for film scenes with multiple characters. Users can also edit generated videos after the fact while keeping the visual style and look intact.

Seedance 2.0 gets 4K, and four more models join the lineup #

Meanwhile, Seedance 2.0 now supports native 4K with 10-bit color depth. Volcano Engine also announced the Doubao 2.1 Pro language model, the Seedream 5.0 Pro image model, and the Seed-Audio 1.0 audio model. According to the company, Doubao 2.1 Pro costs about 80 percent less than Claude Opus 4.6.

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