Seedance AI is a browser-based video generator by ByteDance that turns prompts and images into cinematic 1080p and 4K videos with precise motion control. The platform supports multiple models, including Seedance 2.0, Seedance Pro, Happy Horse 1.0, and Veo 3.1, giving users flexibility across speed, quality, and control. Key features include text-to-video, image-to-video, first and last frame conditioning, multi-reference input, camera movement controls, AI audio sync, and multi-shot consistency. It runs entirely in the browser, uses a credit-based subscription system, and offers commercial-use options on higher plans.