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Kling 4.0 AI Video Generator
Describe your idea, upload a reference, and Kling 4.0 AI Video Generator outputs 4K clips with language-matched audio. Start free.
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Inside the Kling 4.0 AI Video Generator: Core Capabilities
From Kuaishou's research lab comes a tool that takes your typed directions, photos and reference files and returns a finished cut. Omni Reference handles vision and voice in one pass, keeping dialogue locked to the picture in every language.
- Mix Up to 15 Reference InputsDrop in photos, clips, voice samples and character traits together — Omni Reference draws on a combined budget of 15 assets per project.
- Language-Locked Audio and Stereo MixDialogue stays welded to the on-screen action, while two-channel stereo separates each speaker's voice so listeners can follow along easily.
- Three to Thirty Seconds, Extended on DemandOne generation covers a window from three to thirty seconds; to grow the story further, run a separate extension job instead of stretching the first.
Three Steps to a Finished Clip in Kling 4.0 AI Video Generator
Follow three simple steps to move from raw reference material to a polished, downloadable clip you can share right away.
Top Kling 4.0 AI Video Generator Features You Can Rely On
Longer single runs, layered reference handling and precise control over sound and picture across languages — all managed from one workspace.
Single Runs Up to Thirty Seconds
One generation stretches to a full half-minute, enough space for an opening hook, a turning point and a final beat.
720p Through 4K Resolution Choices
Choose 720p, 1080p or 4K and match the crop to where you post — 21:9, 16:9, 1:1, 9:16 or Auto handle everything from vertical reels to cinema-style product films.
A Fifteen-Asset Omni Reference Budget
Combine images, clips, voice samples and subject details inside one 15-asset allowance — say 10 stills, or 5 clips totaling 30 seconds, or 7 characters.
Voice Samples That Follow Any Language
Uploaded voice clips shape how every character sounds; picture and two-channel stereo remain perfectly aligned no matter the language used.
Up to Ten Keyframes for Exact Beat Control
Pin the moments that matter with as many as ten keyframe stills, dictating a character's appearance, transition timing and how each shot begins and ends.
Precision Edits Fed By Up to Five Clips
Adjust expressions, movement, location or overall style by supplying up to 5 clips — one serves as the master take, each 3–30 seconds and capped at 30 seconds combined.
Kling 4.0 AI Video Generator: Your Questions Answered
Quick answers on clip lengths, output quality, reference caps, editing controls, credit costs and API access.
Which clip lengths, resolutions and shape ratios can I pick?
Lengths range from three to thirty seconds, with 720p, 1080p or 4K selectable. HDR gets configured separately from resolution, so verify what your final destination truly needs.
Is there a cap on the Omni Reference files I can upload?
The shared limit is fifteen entries across images, clips, voice samples and subject details combined. Each category taps the same pool, so totals cannot be added on top of each other.
Do spoken voice clips eat into my fifteen-asset allowance?
Yes — they pull from that same fifteen-item pool. Sound and imagery remain locked together regardless of language, so review each delivery line after rendering.
What's the process behind precision video editing?
Hand over up to five clips, with one designated as the primary take. Every clip must span three to thirty seconds and the batch stays under thirty combined; then state the expression, movement, location or style you want reworked.
Where does Kling 4.0 stand against Kling 3.0 and Seedance 2.5?
Compare runtimes, output fidelity, accepted inputs and tuning options. The 4.0 release extends to thirty seconds versus fifteen for 3.0, and layers on ten keyframes plus fifteen Omni Reference positions.
What credit balance applies here, and can I call it via API?
Your existing Kling Motion Control balance works directly, and the generate button's price updates live as you tweak options. Web access says nothing about API access — confirm model IDs, accepted inputs and billing with your provider.
Ready to Try Kling 4.0 AI Video Generator?
Your existing Kling Motion Control credits apply immediately — glance at the live price before you press generate and keep the prompts that worked best.