Kling 4.0 FlashvsWAN 2.1

Side-by-side comparison of specs and sample outputs — no bias, no rankings.

High-speed
Video Generation
Text to Video
短尺動画
WAN2.1
Image to Video
View technical specs

Technical Specifications

FeatureKling 4.0 FlashWAN 2.1
Resolutions720p,1080p480p,720p
Aspect Ratios16:9,9:16,1:1,21:916:9,9:16,1:1
Durations3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20s5s
Audio✅❌
Text to Video
✅Start Generating Now
❌
Image to Video
✅Start Generating Now
✅Start Generating Now
Video to Video❌❌
Reference Images to Video
✅Start Generating Now
✅Start Generating Now
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