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Side-by-side facts: capabilities, typical speed and credit cost. Quality is subjective, so the best test is to try your own prompt on two models.

Kuaishou

Kling 4

AvailabilityAvailable
Known forShots up to 30 seconds · Sound included
Generation typesText to Video, Image to Video
Resolutions720p, 1080p
Duration3–30 s
Aspect ratios16:9, 9:16, 1:1, 21:9
AudioAlways
End frameYes
Reference images—
Typical generation timeAbout 2–4 minutes
Cheapest generation144 credits
5 s at 720p240 credits
Use Kling