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Kling 4.0 AI Video Generator
Type a prompt or drop in a reference and this Kling 4.0 AI Video Generator returns polished 4K footage with matching voice-over in any language.
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A Closer Look at the Kling 4.0 AI Video Generator
Developed by Kuaishou, this model converts scripts, photographs and uploaded assets into ready-to-watch footage. Omni Reference processes sight and sound in a single pass, keeping dialogue aligned with the picture no matter which language is spoken.
- Unified Omni Reference InputStills, moving footage, voice recordings and character elements can all be blended together, capped at a combined fifteen assets for any single project.
- Language-Matched Audio in StereoEvery spoken line lands exactly where it should against the visuals, while two-channel output separates each speaker so voices stay easy to follow.
- Three to Thirty Seconds, Extended LaterOne render produces anywhere from three to thirty seconds; any extra footage is added in a separate extension pass rather than in the original generation.
Three Steps with the Kling 4.0 AI Video Generator
Move from raw reference files to a checked, downloadable clip in three straightforward stages.
What the Kling 4.0 AI Video Generator Can Do
Longer runtimes, stacked reference inputs and language-aware audio-visual control — everything this tool handles in one place.
Clips That Reach 30 Seconds
A single render can extend to half a minute, giving you space for an opening, a middle beat and a closing shot.
720p, 1080p or 4K Delivery
Choose 720p, 1080p or 4K and frame for the platform — 21:9, 16:9, 1:1, 9:16 or Auto span vertical social posts through to widescreen product films.
Fifteen Omni Reference Slots
Blend stills, clips, voice samples and character elements inside one shared allowance of fifteen — say 10 photos, or 5 videos totalling 30 seconds, or 7 subjects.
Voice Samples in Any Language
Uploaded recordings shape how each speaker sounds, while visuals and two-channel stereo remain aligned whatever language is being used.
Ten Keyframes of Control
Pin the moments that matter with up to 10 keyframe stills, guiding how a character looks, when the scene shifts and how the shot opens and closes.
Precision Clip Editing
Adjust facial expressions, movement, environment or overall style by supplying up to 5 clips, one acting as the main take, each running 3–30 seconds and no more than 30 seconds combined.
Questions About the Kling 4.0 AI Video Generator
Straight answers on clip length, output quality, reference limits, editing, credits and API access.
Which clip lengths, resolutions and aspect ratios can I pick?
Footage spans three to thirty seconds, and you can export at 720p, 1080p or 4K. HDR sits outside the resolution setting, so check what your final delivery genuinely requires.
What is the maximum number of Omni Reference assets?
Fifteen assets is the combined limit, covering photos, video, voice recordings and character elements alike. Category counts are drawn from that same pool, so they cannot be added together.
Are voice references included in the fifteen-asset cap?
Yes — they come out of the same pool of fifteen. Sound and picture stay locked together across languages, so it pays to check how each line reads once rendering finishes.
What does targeted video editing involve?
You may upload as many as five clips, with one serving as the main take. Each has to run between three and thirty seconds and the group cannot pass thirty in total; specify which expression, motion, setting or look should change.
How does it stack up against Kling 3.0 and Seedance 2.5?
Compare them on runtime, output quality, accepted inputs and how much control each one gives you. This release stretches to thirty seconds versus fifteen on Kling 3.0, and brings ten keyframes along with fifteen Omni Reference slots.
What credits are required, and can I use an API?
The Kling Motion Control credits already in your account work here, and the price on the generate button updates as you change settings. Web access does not guarantee API availability — confirm model IDs, supported inputs and billing with your provider.
Put the Kling 4.0 AI Video Generator to Work
Your existing Kling Motion Control credits transfer without any setup — review the price on screen before generating, and keep a note of the prompts that worked best.