video model by Kuaishou
Kling 4.0
30-second clips with sound, from text, frames or up to 10 references
What is Kling 4.0?
Kling 4.0 is the newest video model from Kuaishou's Kling family. This page covers three Kling 4.0 tools in Cinemagiq: Kling 4.0 for shots from a prompt or from keyframes, Kling 4.0 References for shots guided by up to 10 reference images, and Kling 4.0 Video Edit for changing an existing clip by prompt.
Kling 4.0 works from a prompt alone, and takes an optional first frame and last frame. Clips run 3 to 30 seconds at 720p or 1080p, in 16:9, 9:16, 1:1 or 21:9, and sound is always generated with the picture. Kling 4.0 References takes up to 10 reference images instead of frames. Kling 4.0 Video Edit changes a 3 to 30 second source clip by prompt, with up to 10 reference images, and makes new sound for it.
Reach for Kling 4.0 when a shot needs length: a long walk-and-talk, a slow reveal, or a whole beat in one take. Use the References variant when several characters, a location and a prop must all match their designs. For a shot that has to land on an exact first and last frame with a shorter clip, Kling O3 is the closer fit; for the cheapest drafts, look at PixVerse C1.
Kling 4.0 examples
Made in Cinemagiq with Kling 4.0. The exact prompt is under each one.
Prompt2D hand-drawn animation style: a small red fox runs through a snowy birch forest and leaps over a fallen log, the camera pans to follow it, soft snow falling, clean ink lines and flat watercolour fills. Sound: paws crunching in the snow, a light wind.
PromptSlow tracking shot along a stone harbour wall at dawn: a fisherwoman in a plain grey wool jumper coils a wet rope, gulls lift off the water behind her, soft fog, warm low sun breaking through. Sound: gulls, water lapping against the wall, the rope creaking.
What Kling 4.0 can do in Cinemagiq
Straight from the model list Cinemagiq runs today.
| Variant | What drives the shot | Length | Resolution | Sound |
|---|---|---|---|---|
| Kling 4.0Text, frames or up to 10 references, up to 30s, with sound | Prompt, first frame (optional), last frame | 3 to 30 s | 720p, 1080p | Always on |
| Kling 4.0 ReferencesText, frames or up to 10 references, up to 30s, with sound | Up to 10 reference images | 3 to 30 s | 720p, 1080p | Always on |
| Kling 4.0 Video EditEdit a 3-30s clip by prompt with up to 10 references; sound is replaced | An existing clip plus a prompt and up to 10 reference images | From the input clip, up to 30 s | 720p, 1080p | None |
Strengths
- Single clips up to 30 seconds
- Prompt-only shots, or first and last frames
- Up to 10 reference images in Kling 4.0 References
- Sound on every clip
- 21:9 for widescreen shots
Best for
- Long takes and whole beats in one shot
- Shots with several designed characters and props
- Widescreen and vertical cuts from the same project
- Revising a take by prompt instead of regenerating it
Watch-outs
- Sound is always generated: plan to replace it in the edit if you need your own mix
- Kling 4.0 References takes no first or last frame
- Kling 4.0 Video Edit needs a source clip of 3 to 30 seconds, at least 700 px on the short side, and replaces its sound
Prompt tips for Kling 4.0
- For a long clip, write the shot as a sequence of beats in order: what happens first, what changes, where the camera ends up. Thirty seconds of one vague sentence drifts.
- Describe the sound you want with the picture (wind, footsteps, a line of dialogue), since Kling 4.0 always generates it.
- In Kling 4.0 References, say which reference is which in the prompt, and only use images you actually attached.
- Start with 5 to 10 second takes to lock the look, then make the long version once the prompt works.
How to use Kling 4.0 in Cinemagiq
- 1Open the Generation Studio in your project and switch to the Video tab.
- 2Pick Kling 4.0 in the AI Model picker. Each card says what drives the result and its limits.
- 3Write the prompt, and add a First Frame, Last Frame or reference images where the model takes them.
- 4Generate. The button shows the token cost before you start.
- 5Find every take in the Asset Hub under All Generations, and add the one you keep to its shot on the Production Board.