SlopTV

Lip-sync test

Bearded man, long line

The prompt: “A man with a full beard saying: "The physics is what gives it away every single time."”

Facial hair hides the jawline, which is exactly where lip-sync models cheat.

Every model, same prompt

#1

Grok Video

xAI

5.00/5 best on this prompt

Exact line, sync holds through beard occlusion.

#2

OpenAI Sora 2

OpenAI

5.00/5

Exact line, sync holds through beard occlusion.

#3

Kling 3.0

Kuaishou

3.75/5

Same as above: mouths the line, silent clip.

Ranked by our blind vision-model judge. Read how we test.

This page ranks by benchmark score only. See affiliate disclosure.