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Kuaishou

Kling 4.0

With input video, minimum billed = 2x output length. 200 credits per 5 s at 720p. Run time unknown. Sample price.

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Kling 4.0 spec
StatusBeta
TypeVideo
Version4.0 (+ 4.0 Flash)
Durations3-30 s (default 5 s)
Resolutions720p · 1080p
AudioNative audio track
LicenceProprietary (Kling API terms)
Provider routes2: fal, Kling (official)
Typical timeUnknown
Price200 cr per 5 s at 720p

Prices and times are samples.

A 1,000 cr pack buys

5 clipssample

At 200 cr per 5 s at 720p. Credit prices

  • 3-30 s clips
  • Native stereo audio
  • Reference-to-video and video edit

Kling 4.0 has 2 provider routes.

A run starts on the first route. If every route for this model fails, Auto moves the run to the next model under your cap, and you pay for the one file that arrives. If nothing can deliver it, the hold is released.

How failed runs are charged
  1. Route 1 · first tryfalUnknown
  2. Route 2 · if route 1 failsKling (official)fallback

No Kling 4.0 sample is hosted here yet

Sources and licences

Samples on this site are the makers’ own published outputs, each credited with its source. Kuaishou has none listed here so far. Outputs made on Milvey will be added as the beta runs.

Licence: Proprietary (Kling API terms)

Conditions apply

Paid API yes; free consumer tier non-commercial.

Conditions are summarised from the licence. They are not legal advice, so check the source before client work.

Known unknowns

  • output-licence clause not read
  • Typical run time

Sources for specs and licence

  • fal.ai/explore/kling
  • fal.ai/learn/tools/how-to-use-kling-4-0

Other video models

Google

Veo 3.1500 cr

Cinematic realism with native, synced audio.

~1m 50s · 2 routes · audio

per 5 s clip at 720p

Kuaishou

Kling V3110 cr

Strong human motion and image-to-video control.

~1m 10s · 3 routes

per 5 s clip at 720p

Alibaba (open)

Wan 2.226 cr

Open weights. Run it routed, or on your own GPU with LoRAs.

~2m 30s · 4 routes

per 5 s clip at 720p

Try Kling 4.0.

Join the list. I’ll email you when signups open. Free credits cover cheaper models; this one is priced above them.

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Kling 4.0 · Milvey