None
None
Long Story Video Skill
Turn your idea into 10s–10min video—AI writes scripts, prompts, and generates footage automatically.
Ads Video Skill
Generate professional ads and sales videos—AI auto-generates scripts, prompts, and footage.
3D Science Explainer Video Skill
Convert scientific concepts into stunning 3D explain animations
Feedback
AI Ad Video Example
Loading...
Kling 4.0 AI Video Generator
Type a line, drop a still or add reference clips — the Kling 4.0 AI Video Generator renders 4K footage up to 30 seconds with synced multilingual voices.
All Tools
Discover our comprehensive AI-powered animation toolkit
MiniMax H3
MiniMax H3 AI Video Generator
Seedance 2.5
The Future of AI Video Is Here.
Seedance 2.0
The Future of AI Video Is Here.
Veo3.1
Create Stunning Videos with Veo3.1
FLUX 3 Video Generator
Kling 3.0
Next-Gen AI Video Generator
Grok Video Generator
Create Videos from Text or Images with AI
MiniMax H3 video generator
MiniMax H3 AI Video Generator
Why Creators Choose the Kling 4.0 AI Video Generator
Developed by Kuaishou, this model converts scripts, single frames and uploaded reference assets into completed footage. Omni Reference processes sight and sound in one pass, so dialogue stays locked to the picture whatever language you work in.
- Unified Omni Reference InputsStills, clips, voice recordings and character elements combine inside a single pool, and any project can draw on up to fifteen of them in total.
- Stereo Output with Language SyncDialogue arrives on cue with the on-screen action, while two-channel stereo separates each speaker so audiences can follow every line.
- Three to Thirty Seconds per PassOne render handles clips from three seconds up to half a minute; any extra length is added afterwards as a separate extension rather than a longer single run.
Using the Kling 4.0 AI Video Generator: A Quick Walkthrough
Follow three short steps to go from raw reference material to a finished clip you can review, refine and download.
What the Kling 4.0 AI Video Generator Can Do
Longer runtimes, stacked reference inputs and multilingual control over both sound and image, all delivered inside one workspace.
Clips That Run to 30 Seconds
One render reaches half a minute, giving you space for an opening, a turning point and a closing beat.
720p, 1080p or 4K Delivery
Choose your resolution and match the frame to where it will play — wide 21:9, classic 16:9, square 1:1, vertical 9:16 or Auto for everything from social shorts to cinematic product spots.
Fifteen Reference Slots to Share
Stills, video, voice clips and character references all draw from the same pool of fifteen — think ten images, five clips totaling thirty seconds, or seven subjects.
Voices in Any Language
Sample audio shapes the timbre of each speaker, and two-channel stereo keeps sound locked to picture no matter which language you work in.
Ten Keyframes Under Your Control
Anchor the moments that matter with up to ten still keyframes, dictating a character's appearance, the timing of scene changes and how the shot begins and ends.
Surgical Edits on Existing Footage
Adjust expressions, movement, environment or grading by supplying up to five clips — one serving as the primary take — each between three and thirty seconds and capped at thirty seconds combined.
Questions About the Kling 4.0 AI Video Generator
Answers on runtime, output quality, reference limits, editing, pricing and API access.
Which clip lengths, resolutions and aspect ratios can I choose?
Renders range from three to thirty seconds, and you can export at 720p, 1080p or 4K. HDR sits outside the resolution setting, so check what your destination platform expects before you commit.
Is there a limit on Omni Reference files?
You get fifteen items in total, and images, video, audio samples and character references all come out of that one allowance. Category figures are not additive — they share the same fifteen slots.
Are voice samples included in the fifteen-item cap?
Yes — audio files occupy the same fifteen slots as everything else. Sound and image remain in sync whatever the language, so review how each spoken line lands after rendering.
What can I change with targeted editing?
Upload up to five source clips and nominate one as the primary take. Every clip must sit between three and thirty seconds, with a combined ceiling of thirty, and you simply state which expression, movement, background or grade should change.
Where does Kling 4.0 sit next to Kling 3.0 and Seedance 2.5?
Compare them on runtime, picture quality, accepted inputs and creative control. This release doubles the previous version's fifteen-second ceiling to thirty, and layers in ten keyframes alongside fifteen reference slots.
What does it cost, and can I access it through an API?
Any Kling Motion Control credits already in your account work here, and the figure shown on the generate button updates as you tweak settings. Web access does not guarantee API access — confirm model IDs, accepted inputs and billing directly with your provider.
Put the Kling 4.0 AI Video Generator to Work
Your existing Kling Motion Control balance transfers automatically — review the cost displayed before rendering, and keep the prompts that gave you the best results.