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    Kling 4.0 vs Veo 3.1: which one to use

    Veo 3.1 makes a fixed 8 second clip with sound, up to 4K, and can extend a finished clip. Kling 4.0 makes one take of any length from 3 to 30 seconds and reads far more of your own material. Here is where each one fits.

    The short answer

    Pick Kling 4.0 when the shot needs more than 8 seconds in one take, a shape other than 16:9 or 9:16, or more than 3 reference images. Pick Veo 3.1 when 8 seconds is enough and you want 4K, or when you want to keep going from a finished clip with Extend.

    Side by side

    FeatureKling 4.0Veo 3.1
    Length3 to 30 seconds, any whole second8 seconds, fixed
    Resolution720p or 1080p720p, 1080p or 4K
    Aspect ratioAuto, 16:9, 9:16, 1:1, 21:916:9 or 9:16
    Reference imagesUp to 101 to 3 at 16:9, not on the Quality tier
    Reference clipsUp to 5, 30 seconds in totalNone
    FramesA first frame, up to 8 in between and a last frameA start image, or a first and a last frame
    SoundAlways on, or a reference clip keeps its own soundAlways made with the clip
    Going longerSet the length up to 30 secondsExtend a finished clip, except 1080p and already extended clips
    TiersOne card, 720p or 1080pLite, Fast and Quality

    Pick Kling 4.0 when

    • The shot runs longer than 8 seconds and must not cut
    • You have more than 3 stills, or clips, to build from
    • The clip is square or ultrawide 21:9
    • You want to pin the motion with frames along the take
    Try it in KubeezKling 4.0 guide

    Pick Veo 3.1 when

    • 8 seconds is the right length
    • You need a 4K master
    • You want to keep going from a clip you already made, with Extend
    • You want to test on the Lite tier before the final
    Try it in KubeezVeo 3.1 guide

    A fixed 8 seconds or a length you choose

    Every Veo 3.1 clip is 8 seconds. To go longer you extend a finished clip, which adds a new section to it. Kling 4.0 lets you set the whole length up front, any whole second from 3 to 30, and renders it as one take.

    What you can give it

    Veo 3.1 works from text, a start image, a first and a last frame, or 1 to 3 reference images at 16:9. Kling 4.0 takes up to 10 stills and 5 clips that you name in the prompt, or up to 10 frames in the Frames tab, plus saved elements and voices.

    Resolution and shape

    Veo 3.1 reaches 4K, in 16:9 or 9:16 only. Kling 4.0 tops out at 1080p and adds 1:1, 21:9 and Auto, which follows the shape of your references.

    Where they rank

    Veo 3.1 has public blind votes behind it on the School video boards. Kling 4.0 is not on the School boards yet.

    Kling 4.0 vs Veo 3.1 questions

    For long takes and shots built from your own stills and clips, yes. For an 8 second clip in 4K, or to extend a clip you already have, Veo 3.1 is the pick.

    Kling 4.0 makes any whole length from 3 to 30 seconds. Veo 3.1 makes 8 seconds, and goes longer only by extending a finished clip.

    Up to 3, at 16:9, on the Lite and Fast tiers. Kling 4.0 takes up to 10 stills and 5 clips.

    Veo 3.1. Kling 4.0 renders at 720p or 1080p.

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