Kling AI Launches Kling 4.0 with 30 Second Video Generations

The Flash edition of the video generator is available immediately for Ultra Yearly subscribers, with the standard version arriving in October. The full Kling 4.0 model enables native 30 second video generations, while the Flash version supports up to 20 seconds. Technical specifications include 4K resolution, 10 bit HDR output, stereo audio, and improved lip synchronization, alongside control features allowing up to 10 keyframes and 15 multi modal references across images, video and audio.

The update adds capabilities for video extension and support for multiple languages, accents, and dialects. Users can now modify specific camera movements, visual styles, or backgrounds on existing clips without regenerating the entire video. The Flash model is designed for high frequency production environments that require faster generation speeds and higher cost efficiency.

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From todayKling AI Launches Kling 4.0 with 30 Second Video Generations

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Kling Gains Traction
Kling 4.0’s 30-second generation capability becomes a meaningful differentiator for Kuaishou in short-form AI video. The market views the launch as evidence that Chinese video models remain competitive with OpenAI Sora, Alibaba, and ByteDance.
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Rivals Respond Quickly
The launch accelerates the feature race in generative video rather than creating a durable Kling advantage. Larger AI platforms respond with longer clips, better motion control, or lower pricing, limiting Kuaishou’s ability to capture outsized share.
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Costs Pressure Margins
Longer generations increase compute demand and revive concerns that AI spending will pressure Kuaishou’s profitability. This scenario fits the 2026 pattern of rising AI investment creating margin trade-offs for Chinese internet platforms.
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Rules Limit Rollout
The longer video format raises regulatory, copyright, and deepfake concerns in China and overseas. Kling remains available, but compliance requirements and platform restrictions slow broader commercial deployment.
Technology −0.4% · Consumer Services −0.2%

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