Kling 4 Dialogue Lip Sync Test: Can 3 Real Clips Hold Up?

Kuaishou has officially announced Kling 3.0 rather than a separately specified Kling 4 dialogue model, so the article evaluates three short Kling 3.0 native-audio video generations: a single English speaker, two English speakers taking turns, and a mixed English-Spanish exchange. Using 10-second, 16:9 prompts with no music or post-production lip sync, the tests assess mouth-to-word timing, correct speaker assignment, silent-listener behavior, facial continuity, and audio continuity across cuts through a 10-point scorecard, while noting that GIFs can show facial movement but source MP4 files are required to judge audio timing. The article emphasizes that these individual runs are illustrative rather than a universal benchmark and recommends concise, named dialogue turns, clear position and clothing anchors, explicit instructions for non-speaking characters to keep their mouths closed, and incremental changes when rerunning failed prompts. It suggests using Kling V3.0 Standard for inexpensive script validation and Pro for more demanding presentation candidates, estimating the three samples at $2.37 before reruns based on September 2026 listed pricing.

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