Two of the strongest video models on Segmind right now come from the two biggest names in the space: ByteDance’s Seedance 2.0 and Alibaba’s HappyHorse 1.0. Both generate video with native audio, both go up to 15 seconds, and both are good enough that the marketing copy starts to blur together. So instead of reading spec sheets, I ran them head to head. I gave both models the exact same six…