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
A sentence, one frame or Omni Reference files are all the Kling 4.0 AI Video Generator needs to render 4K footage of up to 30 seconds with matched speech.
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.
Seedance 2.0
The Future of AI Video Is Here.
AI Multi-Scene Shorts Generator
Create viral AI Shorts instantly
3D Science Video
Create 3D science videos easily
Free GPT Image 2.5
Next-generation image creator
Nano Banana2
Best Image Generator
Meet Kling 4.0: An AI Video Generator for Full Scenes
Kuaishou's Kling 4.0 AI Video Generator converts scripts, photos and uploaded reference assets into finished footage. Omni Reference processes sight and sound in a single pass, so dialogue tracks the picture whatever language you work in.
- One Reference Pool for EverythingStills, clips, voice samples and character elements all feed the same Omni Reference pool, capped at 15 items per project.
- Voices That Match the PictureDialogue hits its cue frame by frame, while two-channel stereo keeps each speaker audibly separate from the rest of the mix.
- Three to Thirty Seconds per PassEach render covers 3 to 30 seconds of action; anything longer is added afterwards as a separate extension job rather than one long run.
Running the Kling 4.0 AI Video Generator in Three Steps
Three short stages carry you from raw reference files to a checked, downloadable clip you are happy to publish.
Capabilities That Set the Kling 4.0 AI Video Generator Apart
Longer takes, stacked reference layers and voice-to-picture control across languages — the Kling 4.0 AI Video Generator bundles all of it into one browser workspace.
Half-Minute Takes in One Go
One render stretches to thirty seconds, enough for an opening, a turn and a payoff without stitching separate scenes together.
720p, 1080p or 4K Delivery
Choose the resolution your channel needs, then frame it as 21:9, 16:9, 1:1, 9:16 or Auto — vertical feeds and widescreen product films from one project.
Fifteen Reference Slots to Share
Stills, clips, audio and character assets draw on one 15-item budget — say ten photos, or five clips totalling thirty seconds, or seven recurring subjects.
Voice Samples in Any Language
Upload a voice and the model mirrors its timbre for every line, with stereo separation and lip sync holding steady across languages.
Ten Keyframes to Steer the Action
Drop in up to ten anchor frames to fix a character's look, time a scene change and decide how the shot enters and exits.
Fix One Detail, Not the Whole Clip
Adjust an expression, a movement, a location or the grade by supplying up to five clips — one main take plus alternates, each 3–30 seconds and 30 seconds combined.
Kling 4.0 AI Video Generator: Your Questions Answered
Straight answers on clip length, output size, reference limits, editing passes, credit costs and API access.
How long can a clip be, and at what resolution?
Renders land anywhere from 3 to 30 seconds, delivered at 720p, 1080p or 4K. HDR sits outside the resolution choice, so check what your final delivery spec actually calls for.
What is the cap on Omni Reference items?
Fifteen in total, and that number covers photos, clips, voice files and character assets together. Category limits are carved out of the same fifteen, so they never stack beyond it.
Are uploaded voice samples part of that fifteen-item budget?
Yes — audio files consume the same slots as images and clips. Since speech is synced to the picture in whichever language you picked, listen back to each line once rendering finishes.
Can I change one part of a finished shot?
Feed in up to five clips with one marked as the main take; each runs 3–30 seconds and the set cannot exceed thirty seconds combined. Then state whether the expression, motion, setting or overall grade should change.
What separates Kling 4.0 from Kling 3.0 or Seedance 2.5?
Compare them on runtime, output quality, accepted inputs and directorial control. Kling 4.0 doubles the earlier ceiling to thirty seconds and layers in ten keyframes alongside fifteen reference slots.
What does it cost, and can I call it through an API?
The Kling Motion Control balance in your account pays for renders, and the button price shifts live as you change length or resolution. Web access does not guarantee API access, so confirm model IDs and billing with your provider first.
Ready to Direct Your First Kling 4.0 Clip?
Your existing Kling Motion Control balance applies here as-is. Watch the live price while you adjust length and resolution, then keep the prompts that landed best for the next run.