Kling 4.0 is an AI video generator for creators, marketers and small teams who need cinematic clips fast. Combine a text prompt with image, video or audio references to direct subjects, camera movement, pacing and visual style, then render scenes for social posts, product showcases, ads, music videos and short films. Kling 4.0 generates 3 to 30 second clips in a single pass, with output up to 4K, synchronized stereo sound, and both text-to-video and image-to-video workflows. Up to 15 reference assets and 10 keyframes help keep characters and transitions consistent across a shot. Targeted editing lets you change a specific region or moment without regenerating the whole clip, so refining an idea takes minutes rather than hours.