Kling AI launches 4.0 with stereo audio and multilingual lip sync

Kling AI released version 4.0 of its video generator, supporting clips up to 30 seconds, ten keyframe inputs and prompt comprehension of 8,000 tokens, plus stereo audio, multilingual lip sync and a lighter Flash variant. Against Wan 3.0 and Seedance 2.5 it holds its own but doesn't pull ahead, hinting progress may be leveling off.

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