According to ChainCatcher, citing Decrypt, the Chinese short-video platform Kuaishou recently upgraded its AI video generation tool Kling 2.1, adding a synchronized sound effect generation feature that can automatically add environmental sounds such as footsteps and rain. This feature supports video generation at 1080p resolution, with a generation time of 5 to 10 seconds, and is currently available for free.
In terms of pricing, the Kling 2.1 subscription fee is $9 per month, which is over 20 times lower than Google Veo 3's $250 monthly fee. Tests show that Kling stands out in environmental sound synchronization and cost advantages, but does not currently support voice synthesis; Veo 3 maintains a technical lead in voice generation and complex sound effect processing.
Notably, Kling 2.1 uniquely offers "adding sound effects to silent videos" and "lip-sync" features, while Veo 3 only supports text-to-video generation. In content review, Kling adopts a relatively lenient strategy, whereas Veo 3 implements a strict keyword filtering mechanism.
