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Kling 4.0 AI Video Generator
Create up to 30-second 4K videos from text, images and Omni Reference assets with the Kling 4.0 AI Video Generator — multilingual sync audio included.
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What Is the Kling 4.0 AI Video Generator
Built by Kuaishou, Kling 4.0 turns written prompts, stills and supplied reference material into finished video. Visual and voice inputs are handled together through Omni Reference, with audio and picture kept in step across languages.
- Omni Reference WorkflowPictures, footage, voice samples and subject elements can all be mixed as Omni Reference inputs, with a shared ceiling of 15 items per project.
- Multilingual Sync and StereoSpoken lines land in time with the visuals, and two-channel stereo output gives every character a distinct voice to follow.
- 3–30 Seconds, Extension SeparateA single pass covers three to thirty seconds; adding more time later runs as its own extension step, not as part of the same generation.
How to Use the Kling 4.0 AI Video Generator
Three steps take you from reference material to a reviewed, exportable clip with the Kling 4.0 AI Video Generator.
Kling 4.0 AI Video Generator Features
Extended runtime, layered reference inputs and multilingual sound-and-picture control, all handled through the Kling 4.0 AI Video Generator.
Generate Up to 30 Seconds
A single pass can stretch to half a minute, leaving room for a setup, a middle beat and a closing.
720p, 1080p and 4K Output
Pick 720p, 1080p or 4K and frame for the destination — 21:9, 16:9, 1:1, 9:16 or Auto cover vertical social posts through to wide-format product films.
Up to 15 Omni Reference Assets
Mix stills, footage, voice samples and subject elements within one shared budget of 15 — for example 10 pictures, or 5 clips adding up to 30 seconds, or 7 subjects.
Multilingual Voice References
Voice samples steer how each speaker sounds, while picture and two-channel stereo stay in step across languages.
Control Up to 10 Keyframes
Mark the beats that matter with as many as 10 keyframe stills, steering how a character looks, when the scene shifts and how the shot opens and closes.
Targeted Video Editing
Rework facial expressions, motion, settings or overall look by feeding in as many as 5 clips, one of them the main take, each running 3–30 seconds and no more than 30 seconds in total.
Kling 4.0 AI Video Generator — FAQ
Duration, resolution, references, editing, credits and API questions about the Kling 4.0 AI Video Generator.
What duration, resolution and aspect ratio are supported?
Clips run between three and thirty seconds, and output is available at 720p, 1080p or 4K. HDR is configured apart from resolution, so confirm what your final delivery actually requires.
How many Omni Reference assets can I use?
Fifteen items is the shared ceiling, covering pictures, footage, voice samples and subject elements alike. The per-category numbers draw from that same pool, so they cannot be stacked.
Do voice references count toward the 15-asset limit?
They do, and they draw from the same pool of fifteen. Audio and picture stay synchronized across languages, so it is worth checking how each line lands once the clip is rendered.
How does targeted video editing work?
You can supply as many as five clips, one of which acts as the main take. Each must fall between three and thirty seconds, and together they cannot exceed thirty; say which expression, motion, setting or look you want changed.
How does Kling 4.0 compare with Kling 3.0 and Seedance 2.5?
Line up runtime, output quality, what each model accepts as input and how much control it offers. Kling 4.0 reaches thirty seconds where Kling 3.0 stops at fifteen, and adds ten keyframes plus fifteen Omni Reference slots.
Which credits do I need, and is there an API?
Credits you already hold on Kling Motion Control are usable here, and the price on the generate button changes as you adjust settings. API availability is not implied by web access — check model IDs, supported inputs and billing with your provider.
Explore the Kling 4.0 AI Video Generator
Credits you already have on Kling Motion Control carry straight over — check the price shown before you hit generate, and save the prompts that delivered.