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Kling 4.0 AI Video Generator
Merge written prompts, stills and reference clips into 4K footage lasting up to 30 seconds — the Kling 4.0 AI Video Generator syncs speech in any language.
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Meet the Kling 4.0 AI Video Generator
Developed by Kuaishou, Kling 4.0 converts text briefs, still frames and uploaded references into complete footage. Omni Reference handles sight and sound in one pass, keeping dialogue aligned with the picture no matter the language.
- Mixed-Input Reference PipelineStills, footage, voice samples and character elements all slot into Omni Reference, sharing one ceiling of fifteen items per project.
- Language-Matched Stereo SoundSpoken lines arrive in step with the visuals, while two-channel stereo output gives every speaker a voice you can follow.
- Three to Thirty Seconds, Extensions ApartOne run covers three to thirty seconds; anything longer is added as its own extension pass rather than inside the original generation.
Putting the Kling 4.0 AI Video Generator to Work
Three moves carry you from raw reference material to a checked, downloadable clip with the Kling 4.0 AI Video Generator.
Key Strengths of the Kling 4.0 AI Video Generator
Longer runtime, stacked reference inputs and multilingual command over sound and picture — all delivered through the Kling 4.0 AI Video Generator.
Half a Minute in One Run
A single pass stretches to thirty seconds, leaving room for an opening, a middle beat and a closing.
720p, 1080p and 4K Delivery
Choose 720p, 1080p or 4K and frame for the destination — 21:9, 16:9, 1:1, 9:16 or Auto carry you from vertical social posts to wide-format product films.
Fifteen Omni Reference Slots
Stills, footage, voice samples and subject elements share a budget of fifteen — say 10 pictures, or 5 clips totaling 30 seconds, or 7 subjects.
Voice References in Many Languages
Voice samples shape how each speaker sounds, while picture and two-channel stereo remain locked together across languages.
Ten Keyframes Under Your Control
Mark the beats that matter with up to 10 keyframe stills, guiding a character's look, the moment a scene shifts and how the shot opens and closes.
Surgical Video Editing
Adjust facial expressions, motion, settings or overall look by supplying up to 5 clips, one acting as the main take, each 3–30 seconds and no more than 30 seconds combined.
Frequently Asked Questions About the Kling 4.0 AI Video Generator
Answers on runtime, resolution, references, editing, credits and API access for the Kling 4.0 AI Video Generator.
Which clip lengths, resolutions and aspect ratios can I choose?
Clips run from three to thirty seconds and render at 720p, 1080p or 4K. HDR is configured apart from resolution, so check what your final delivery actually requires.
What is the maximum number of Omni Reference assets?
Fifteen items is the shared ceiling across pictures, footage, voice samples and subject elements. Per-category limits draw from that same pool, so they cannot be stacked.
Are voice references included in the 15-asset cap?
Yes — they come out of the same pool of fifteen. Audio and picture stay synchronized across languages, so it pays to check how each line lands once rendering finishes.
What can targeted video editing actually change?
Supply up to five clips, one of them the main take. Each must sit between three and thirty seconds and together stay under thirty; name the expression, motion, setting or look you want altered.
Where does Kling 4.0 stand next to Kling 3.0 and Seedance 2.5?
Compare runtime, output quality, accepted inputs and the level of control each model offers. Kling 4.0 stretches to thirty seconds where Kling 3.0 stops at fifteen, and brings ten keyframes plus fifteen Omni Reference slots.
What credits are required, and can I use an API?
Credits you already hold on Kling Motion Control work here, and the price on the generate button updates as you change settings. Web access does not imply API availability — 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 carry over — review the price before you hit generate, and keep the prompts that worked best.