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Kling 4.0 AI Video Generator
Type an idea, drop a picture or upload a reference, and the Kling 4.0 AI Video Generator renders a 4K clip of up to 30 seconds with matching voice-over.
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Inside the Kling 4.0 AI Video Generator
Kuaishou's Kling 4.0 model converts typed prompts, photographs and uploaded reference files into a finished clip. Its Omni Reference system reads picture and voice together, so dialogue stays aligned with the action no matter which language you work in.
- One Shared Reference PoolStills, clips, voice samples and subject elements all feed the same Omni Reference pool, which caps out at 15 items for any single project.
- Speech That Matches the PictureDialogue lands on the beat with what is happening on screen, while two-channel stereo keeps each character's voice easy to tell apart.
- Three to Thirty Seconds Per PassEach render covers anything from three to thirty seconds, and any extra runtime is produced as a separate extension rather than in the same run.
From Reference to Final Cut With the Kling 4.0 AI Video Generator
Move from raw reference material to a checked, downloadable clip in three short stages using the Kling 4.0 AI Video Generator.
Capabilities Built Into the Kling 4.0 AI Video Generator
Longer runtimes, stacked reference inputs and language-aware control over both sound and picture — all delivered by the Kling 4.0 AI Video Generator.
Clips That Reach 30 Seconds
One render can run for a full half-minute, enough space for an opening, a turning point and a closing beat.
Output From 720p to 4K
Choose 720p, 1080p or 4K, then frame for wherever it lands — 21:9, 16:9, 1:1, 9:16 or Auto covers everything from vertical social posts to widescreen product films.
Fifteen Omni Reference Slots
Blend photos, footage, voice samples and subject elements inside a single allowance of 15 — say 10 images, or 5 clips totalling 30 seconds, or 7 subjects.
Voices in Any Language
Uploaded voice samples shape how each speaker sounds, while visuals and two-channel stereo remain locked together whatever the language.
Ten Keyframes for Precise Control
Pin down the moments that matter with up to 10 keyframe stills, guiding a character's appearance, the timing of scene changes and how the shot opens and closes.
Precision Editing on Existing Footage
Adjust expressions, movement, surroundings or the overall look by supplying up to 5 clips — one acting as the main take — each between 3 and 30 seconds and 30 seconds combined at most.
Frequently Asked 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.
Which clip lengths, resolutions and aspect ratios can I choose?
Anything from three to thirty seconds, rendered at 720p, 1080p or 4K. HDR sits outside the resolution setting, so double-check what your final delivery really needs.
Is there a cap on Omni Reference assets?
The shared limit is fifteen items, and it covers images, footage, voice samples and subject elements equally. Every category draws from that one pool, so the allowances cannot be stacked on top of each other.
Are voice references included in the fifteen-item limit?
Yes — they come out of the same pool of fifteen. Because sound and picture are synchronized across languages, it pays to review how each spoken line lands after rendering.
What does targeted video editing involve?
Supply up to five clips, with one serving as the main take. Each has to sit between three and thirty seconds, and the combined total cannot pass thirty. Then state which expression, movement, setting or look should change.
How does Kling 4.0 stack up against Kling 3.0 and Seedance 2.5?
Compare them on runtime, output quality, accepted inputs and the level of control on offer. Kling 4.0 stretches to thirty seconds while Kling 3.0 stops at fifteen, and it adds ten keyframes along with fifteen Omni Reference slots.
What credits are required, and can I use an API?
Any credits sitting in your Kling Motion Control balance work here, and the figure shown on the generate button updates as you change settings. Web access does not guarantee an API — confirm model IDs, supported inputs and billing with your provider.
Start Creating With the Kling 4.0 AI Video Generator
Your existing Kling Motion Control credits transfer without any setup — glance at the cost displayed before generating, and keep a note of the prompts that worked best.