Kuaishou's Kling AI has unveiled Kling 4.0 in preview, a major upgrade to its flagship video generation model that extends clip length, enhances reference capabilities, and introduces native 4K resolution with synchronized audio. The update, one of the largest in the model's history, aims to address longstanding limitations in AI video generation for professional use.
Kling 4.0 Preview now supports native generation of up to 30 seconds per clip, with an experimental Long Video mode capable of producing continuous 120-second sequences at 1080p. Clips can also be extended to 60 seconds after generation, directly tackling complaints about earlier Kling versions whose shorter runtimes complicated narrative and advertising planning.
The centerpiece is Omni Reference, a system that allows a single generation to draw on up to 15 reference elements from a pool of up to 50 uploaded files—30 images, 10 video clips, and 10 audio clips. This enables creators to lock a character's face across shots, match a product's exact color from a reference photo, or carry a specific lighting setup between scenes without re-describing details in every prompt.
Multi-shot generation uses the same reference system, so a single prompt can produce a sequence of shots with spatial continuity—a room remains consistent as the camera moves, and characters keep the same clothing and face across cuts. This addresses a historical weak point for AI video tools, where scenes often visibly reset when the camera angle changes.
On audio, dialogue, ambient sound, and music are generated in the same pass as the picture, with lip movement synced to spoken lines across multiple languages and accents. Different lines can be assigned to different characters within the same scene, eliminating a manual dubbing step that previously required separate audio software.
Native 4K output (3840×2160) preserves fine texture, sharp edges, and depth of field through fast-motion shots without relying on post-generation upscaling—a distinction creators increasingly see as the real test of whether a clip survives the move from preview to publish.
Kling4.org provides direct access to Kling 4.0's generation modes as they roll out, including standard, Pro, and native 4K tiers, letting creators, marketers, and small teams test prompt-to-clip workflows, persistent-character generation, and multi-shot sequencing. The site also offers a Kling 4.0 video prompt library for practical starting points.
The implications for the AI video industry are significant. Longer native runtimes and consistent multi-shot generation could make AI video viable for more complex commercial projects, reducing the need for stitching and manual editing. Synced multilingual audio simplifies global content creation, while native 4K meets broadcast and advertising quality standards. As competition in generative video intensifies, Kling 4.0's advances may pressure rivals to accelerate their own feature rollouts, benefiting creators and businesses that rely on rapid, high-quality video production.
