Kling AI generates video from text prompts and images, with a documented focus on photorealistic human motion and native 4K output rather than upscaled resolution. Built-in audio synthesis and lip-sync are included, which removes the external toolchain that most comparable generators require. The free tier provides 66 daily credits — enough for experimentation and low-volume testing. The wall appears when you push toward high-volume batch output or need fine-grained control over scene composition across a multi-shot sequence; the one-shot generation model does not chain shots autonomously. Teams running high-volume e-commerce catalogs typically schedule generation in batches and manage sequencing outside the tool.