The one that set the bar for what generated video could look like, and still the pick when the clip has to feel cinematic. Sora holds a scene together over longer shots than most rivals, with fewer of the melting hands and warping backgrounds that give AI video away. It lives inside a ChatGPT subscription, so there is nothing extra to buy.
It applies firm content limits and does not match the dedicated creative tools for fine control over camera and motion. For a striking clip from a prompt or a still image with minimal fuss, it is the safest first try.