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Kling 4.0 AI Video Generator
Type a prompt or drop in reference clips and let the Kling 4.0 AI Video Generator render 4K footage reaching 30 seconds, with multilingual audio in sync.
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Why Creators Choose the Kling 4.0 AI Video Generator
Developed by Kuaishou, this model reads your script, photographs and uploaded clips and returns a finished cut. Omni Reference lets picture and voice be directed as one, so dialogue and image stay locked together whatever language you work in.
- One Pool for Every Reference InputStills, video, voice clips and subject shots all feed the same Omni Reference pool, which is capped at fifteen entries for any single project.
- Dialogue Locked to Picture in Any LanguageEvery spoken line lands on the beat of the visuals, and two-channel stereo keeps each character's voice easy to tell apart.
- Runs of 3 to 30 Seconds, Extended on RequestOne generation covers three to thirty seconds. Needing more time means a separate extension pass rather than a longer first render.
Kling 4.0 AI Video Generator: From Reference to Export
Reference in, export out: follow three short steps with the Kling 4.0 AI Video Generator to reach a clip you can publish.
What the Kling 4.0 AI Video Generator Can Do
Longer runs, stacked reference inputs and voice-to-picture control in any language — the Kling 4.0 AI Video Generator brings them together.
Clips That Reach 30 Seconds
One render can run to half a minute, which is enough space for an opening, a turn and a payoff.
720p, 1080p or 4K Delivery
Choose your resolution, then match the frame to the channel — 21:9, 16:9, 1:1, 9:16 or Auto carries you from vertical feeds through to widescreen product films.
Fifteen Omni Reference Slots
Stills, footage, voice samples and subject shots share a single allowance of fifteen — say 10 images, or 5 clips totaling 30 seconds, or 7 subjects.
Voice References in Any Language
Uploaded voice samples shape how each speaker sounds, while image and stereo audio stay aligned no matter which language the script uses.
Ten Keyframes for Shot Control
Anchor the moments that matter with as many as 10 keyframe stills, guiding a character's look, the timing of a scene change and how the shot opens and closes.
Surgical Video Editing
Adjust expressions, motion, environment or overall look by supplying up to 5 clips — one acting as the main take — each running 3–30 seconds and 30 seconds combined at most.
Kling 4.0 AI Video Generator: Your Questions Answered
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 and aspect ratio?
Renders span three to thirty seconds and export at 720p, 1080p or 4K. HDR is set separately from resolution, so check what your final delivery really needs.
Is there a cap on Omni Reference inputs?
The ceiling is fifteen items in total, and stills, video, voice samples and subject shots all count against it. Per-category figures come out of that one pool, so they do not stack.
Are voice references counted in the fifteen-item limit?
Yes — voice samples come out of the same fifteen. Because sound and image stay synchronized in any language, it pays to check how each line lands once the clip is rendered.
What does targeted video editing actually change?
Supply up to five clips, one designated as the main take. Every clip must sit between three and thirty seconds, and the total cannot pass thirty; state which expression, motion, setting or look should change.
How does it stack up against Kling 3.0 and Seedance 2.5?
Weigh runtime, output quality, accepted inputs and the level of control on offer. Kling 4.0 runs to thirty seconds where Kling 3.0 caps at fifteen, and it adds ten keyframes along with fifteen Omni Reference slots.
What credits does it use, and is an API available?
Your existing Kling Motion Control balance works here, and the figure on the generate button updates as settings change. Web access does not guarantee API access — confirm model IDs, supported inputs and billing with your provider.
Put the Kling 4.0 AI Video Generator to Work
Your Kling Motion Control balance carries over unchanged — confirm the cost on screen before generating, and keep a note of the prompts that worked.