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Kling 4.0 AI Video Generator
Kling 4.0 AI Video Generator turns prompts, stills and Omni Reference clips into 4K footage up to 30 seconds, with voice synced in any language.
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What Makes the Kling 4.0 AI Video Generator Different
Kuaishou's Kling 4.0 model converts scripts, photographs and uploaded reference assets into ready-to-post footage. Omni Reference processes picture and voice in one pass, so dialogue stays locked to the action no matter which language you work in.
- One Workspace for Every ReferenceStills, footage, voice clips and character elements all drop into the same Omni Reference pool, capped at 15 items for any single project.
- Voices That Match the PictureDialogue lands on the beat instead of drifting, and two-channel stereo keeps every speaker audibly separate from the rest of the cast.
- Three to Thirty Seconds Per PassOne generation covers anything from three to thirty seconds; anything longer is added afterwards as its own separate extension run.
Kling 4.0 AI Video Generator: Three Steps to a Finished Clip
Pick your model, describe the shot and review the take — the Kling 4.0 AI Video Generator handles everything in between.
What the Kling 4.0 AI Video Generator Brings to the Table
Longer takes, stacked reference inputs and language-matched sound are all handled in one place by the Kling 4.0 AI Video Generator.
Takes That Run to 30 Seconds
One generation stretches to half a minute, leaving enough space for an opening, a turn in the middle and a clean finish.
720p, 1080p or 4K Delivery
Choose 720p, 1080p or 4K, then frame for the destination — 21:9, 16:9, 1:1, 9:16 or Auto covers vertical social cuts through to wide-format product films.
Fifteen Omni Reference Slots
Stills, footage, voice clips and subject elements share one budget of 15 — say 10 pictures, 5 clips totalling 30 seconds, or 7 subjects.
Voice Samples in Any Language
Uploaded voice samples define how each speaker sounds, while the picture and the two-channel stereo track stay locked together across languages.
Ten Keyframes Under Your Control
Place as many as 10 keyframe stills to pin down a character's look, the moment a scene turns and the way the shot opens and closes.
Surgical Edits on Existing Footage
Adjust expressions, motion, surroundings or overall styling by uploading up to 5 clips — one acting as the main take, each 3–30 seconds, 30 seconds in total.
Questions About the Kling 4.0 AI Video Generator
Answers on clip length, output quality, reference limits, editing, credits and API access for the Kling 4.0 AI Video Generator.
How long can clips be, and at what resolution?
Anywhere from three to thirty seconds, rendered at 720p, 1080p or 4K, with 21:9, 16:9, 1:1, 9:16 and Auto framing available. HDR is configured apart from resolution, so confirm what your final delivery actually requires.
What is the Omni Reference limit for one project?
Fifteen items in total, and that single pool covers pictures, footage, voice samples and subject elements alike. Per-category caps are drawn from the same fifteen, so they cannot be stacked.
Are voice samples part of the fifteen-item cap?
Yes — they come out of the same pool of fifteen. Because audio and picture are synchronized across languages, it is worth listening closely to how each line lands once the render finishes.
What can targeted video editing actually change?
You may supply up to five clips, one of which acts as the main take. Each has to fall between three and thirty seconds, and together they cannot pass thirty; simply state which expression, movement, setting or look should be changed.
How does Kling 4.0 stack up against Kling 3.0 and Seedance 2.5?
Compare runtime, output quality, the inputs each model accepts and how much control it hands you. Kling 4.0 reaches thirty seconds where Kling 3.0 stops at fifteen, and it adds ten keyframes plus fifteen Omni Reference slots.
Which credits apply, and can I call an API?
Credits already sitting on your Kling Motion Control account work here, and the figure on the generate button updates as you change settings. Web access does not imply API availability — confirm model IDs, supported inputs and billing with your provider.
Start Building with the Kling 4.0 AI Video Generator
Your existing Kling Motion Control credits transfer without any extra setup — review the price shown before you generate, and keep the prompts that delivered the best take.