Kling AI releases version 4.0 video generator
The Decoder: Kling AI drops version 4.0 with stereo audio, multilingual lip sync, and a lighter Flash variant
Kling AI has released version 4.0 of its video generator with support for clips up to 30 seconds, ten keyframe images as input, and prompt comprehension expanded to 8,000 tokens. In comparisons with Wan 3.0 and Seedance 2.5, Kling 4.0 holds its own but doesn't pull ahead, which could be an early sign that the breakneck pace of progress in AI video models is starting to level off. The article Kling AI drops version 4.0 with stereo audio, multilingual lip sync, and a lighter Flash variant
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An AI video generator has released a new version featuring higher resolution output, extended video length up to 30 seconds per generation, and improved controls including keyframe inputs and expanded prompt comprehension. The update adds stereo audio and multilingual lip-sync capabilities across multiple languages, along with a faster, lower-cost Flash variant for quicker generation at reduced resolution. According to performance comparisons with competing systems, this version performs comparably to rivals but does not show clear advancement, particularly in areas like shot sequencing, physics, and dialogue naturalness. The new capabilities and pricing for the API are available or coming soon, with the interface now accessible through multiple technical pathways for automated workflows.
Explainer: Video AI Is Splitting in Two: The Seedance vs. Kling Control Divide
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