Seedance 2.0 Video Duration: Length, Cost & Use Cases

If you have spent any time choosing a length for an AI-generated video, you already know that “duration” is not a free parameter. Every extra second affects cost, quality, narrative tightness, and how forgiving the model is when you push it. I recently ran a fresh round of generations on Seedance 2.0 to map out exactly what the Seedance 2.0 video duration options give you, what they cost, and…