Kling4ai.io

Kling 4.0 is an AI video generator for text-to-video and image-to-video work. It generates clips from 3 to 30 seconds and is listed as supporting 720p, 1080p, and 4K, with 10-bit HDR at 1080p and 4K, and aspect ratios including 21:9, 16:9, 1:1, and 9:16. Omni Reference accepts up to 15 items across images, videos, voice references, and subjects, so characters, products, actions, and camera movement can stay more consistent.

Audio is generated in sync, with improved lip sync and two-channel stereo, so talking shots and music videos come out with sound already in place. Up to 10 keyframes pin down character states, scene changes, and story beats, and prompts of up to 8,000 tokens leave room for a full shot list. On-screen text, emoji, and logos render clearly in multiple languages.

Available controls include duration, resolution, aspect ratio, Omni Reference, and keyframes. Generated videos may be used for commercial purposes. Use cases include product ads, e-commerce showcases, campaign creatives, vlogs, documentaries, animation, short dramas, and music videos.