Kling 4.0

Kuaishou announced Kling 4.0 for October and switched on Kling 4.0 Flash the same day for Ultra yearly subscribers. The spec sheet reads like a list of everything filmmakers had been working around: native 30-second generation, up to 10 keyframes in a clip, up to 15 multimodal references in Omni Reference, 4K output with 10-bit HDR, stereo audio with tighter lip sync, video extension, and dialogue in multiple languages, accents and dialects.

Nearly eight months after Kling 3.0, the version number marks a convergence more than a leap. Thirty-second takes matched Wan 3.0, keyframe direction followed Luma Ray3.2, and HDR output followed Ray3 and Runway Ruby. By the fall of 2026 the leading models were competing on the same checklist.

The full model went live for all users on October 15, with a redesigned creation page, and Kuaishou announced the global launch the next day: more than 100 million users and 50,000 enterprise customers, and Kling 4.0 coming to Adobe Firefly. The API followed on October 21. Not everything on the September spec sheet shipped at once: 10-bit HDR, 4K, 21:9 and two-minute extension were listed as coming soon, and early API tests found 720p and 1080p, start and end frames rather than ten keyframes, and always-on stereo audio. Filmmakers working with it described the change in directing terms; Evolutionary Films, using it on the animated feature Minibots, said it "feels increasingly like directing a film rather than prompting an AI."