Kling 4.0
Kuaishou's flagship video model — native 30-second takes, up to 15 reference assets, 10 keyframes, and stereo audio with accurate lip-sync.
curl https://api.venice.ai/api/v1/video/queue \
-H "Authorization: Bearer $VENICE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "kling-v4-text-to-video",
"prompt": "Aerial drone shot over a misty mountain valley at golden hour",
"duration": "5s",
"resolution": "720p",
"aspect_ratio": "16:9"
}'
# Use the returned queue_id with https://api.venice.ai/api/v1/video/retrieve.
# Call /video/complete after downloading if needed.Overview
What is Kling 4.0
Kling 4.0 is Kuaishou's next-generation video generation model, officially launched on October 15, 2026. It generates clips from 3 to 30 seconds in a single pass, accepts up to 15 reference assets and 10 keyframes, and produces native audio with two-channel stereo and accurate lip-sync. On Venice it runs in three variants: text-to-video, image-to-video, and reference-to-video.
Using it anonymously on Venice
On Venice, Kling 4.0 runs under the anonymized privacy tier — your prompts are not stored, profiled, or tied to a personal generation history, which matters when you're storyboarding unreleased campaigns or personal footage. Venice lists all three variants (kling-v4-text-to-video, kling-v4-image-to-video, kling-v4-reference-to-video) with pay-per-clip pricing from $0.59 instead of a subscription, and clips up to 30 seconds cost a fraction of what credit-based competitor apps charge. Note that Venice runs the closed weights as Kuaishou ships them — this is not an open-source or uncensored model.
Specifications
Datasheet
- Maker
- Kuaishou (Kling AI)
- Modality
- Text-to-video, image-to-video, reference-to-video — all with native audio
- License
- Proprietary
- Clip lengths
- 3s – 30s
- Resolutions
- 720p, 1080p
- Mode
- text-to-video
- Audio
- Yes
- Prompt limit
- 26,000 chars
- References
- Up to 15 reference assets — images, videos, voices, or elements (Omni Reference)
- Released
- October 15, 2026
- Keyframes
- Up to 10 keyframe images placed along the timeline
- Aspect ratios
- 16:9, 9:16, 1:1, 21:9
- Privacy on Venice
- Anonymized — prompts not stored
- Available on Venice since
- Oct 2026
Assessment
Strengths and limitations
- Native 3–30 second generation in one pass: the longest single-take ceiling of any video model on Venice, built for long takes and continuous storytelling.
- Omni Reference keeps subjects consistent: combine up to 15 assets (faces, products, locations, videos, voices) and pin up to 10 keyframes along the timeline.
- Stable large-scale motion: high-speed action, tracking shots, and orbit shots stay smooth where earlier models wobble.
- Native audio with two-channel stereo and notably accurate lip-sync, so dialogue and performance stay synchronized.
- 21:9 ultrawide framing alongside 16:9, 9:16, and 1:1, plus a generous 26,000-character prompt limit for detailed director-style briefs.
- Closed and proprietary: no open weights, so it cannot be self-hosted or fine-tuned.
- On Venice, output tops out at 1080p; the 4K 10-bit HDR output Kuaishou advertises is listed as coming soon and is not yet available.
- Reference-driven results take work: every reference image needs a clear job and every shot needs timing, or the model drifts.
- Third-party testers found pure text-to-video realism can be beaten by rivals like Seedance 2.0; Kling 4.0's edge shows when you feed it references.
Use cases
What it is good for
- 01Long single-take shots — drone reveals, continuous action, walk-and-talk scenes — that shorter models force you to stitch.
- 02Ad and product spots where a specific face, product, or location must stay consistent across the whole clip.
- 03Dialogue scenes with synchronized speech and stereo sound generated natively.
- 04Multi-shot sequences storyboarded with keyframes: pin the first, middle, and final frames and let the model fill the motion.
- 05Vertical 9:16 social clips and ultrawide 21:9 cinematic frames from the same model.
Prompting
Getting better results
Pick an exact duration in 1-second steps (e.g. 17s) instead of rounding to 5s or 10s — every length from 3 to 30 is a valid setting.
Write camera directions explicitly ('slow orbit around the subject, then push in') — testers found Kling 4.0 follows camera instructions more closely than most rivals.
Put spoken dialogue in quotes and name the speaker so lip-sync aligns to the right line.
Give every reference asset one job in the prompt ('image 1 = the actress's face, image 2 = the hotel lobby location') rather than dumping them unlabeled.
Use keyframes to pin the first, middle, and last moments of a 30-second take — the model interpolates the motion between them.
Draft at 720p to iterate cheaply, then re-render the winning prompt at 1080p; on Venice price scales with resolution and duration.
Samples
Sample outputs
Generated on Venice with our standard prompt suite — the same prompts we run through every model of this type, so you can judge it like-for-like.
Slow aerial drone shot gliding over a misty mountain valley at golden hour, sunlight piercing clouds onto a winding river, ancient pine forests on either side, ultra-smooth motion, professional color grading, atmospheric haze, 4K
Calm ocean waves rolling onto a black-sand beach at sunrise, golden light on wet sand, foam dissolving into the shore, a single silhouetted figure at the waterline, smooth continuous forward push, serene cinematic atmosphere
A slow tracking shot through a rain-soaked Tokyo street at night, neon reflecting in puddles, steam rising from a food cart, a person with a translucent umbrella, shallow depth of field, teal-and-orange grade, smooth steady camera
Alternatives
How it compares
| Model | Best for | Max duration | Max resolution | Native audio |
|---|---|---|---|---|
| Kling 4.0 | Long takes & reference-driven storytelling | 30s | 1080p | Yes |
| Grok Imagine 1.5 | Fast drafts with sound | 15s | 1080p | Yes |
| Wan 2.7 Enhanced | Open-weights workflows | 15s | 1080p | Yes |
| Vidu Q3 | Short-form consistency | 16s | 1080p | Yes |
Kling 4.0 is the right pick when the shot is long, the subject must stay consistent, or the brief reads like a director's treatment — nothing else on Venice generates past 16 seconds in one pass. For quick drafts or open-weight self-hosting, Grok Imagine 1.5 or Wan 2.7 Enhanced fit better.
API
Call it from your code
Venice exposes this model through the REST API. Queue a generation with the model id.
curl https://api.venice.ai/api/v1/video/queue \
-H "Authorization: Bearer $VENICE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "kling-v4-text-to-video",
"prompt": "Aerial drone shot over a misty mountain valley at golden hour",
"duration": "5s",
"resolution": "720p",
"aspect_ratio": "16:9"
}'
# Use the returned queue_id with https://api.venice.ai/api/v1/video/retrieve.
# Call /video/complete after downloading if needed.Pricing
What it costs on Venice
Pay per clip on Venice — price scales with resolution and duration (3s–30s), from $0.59.
New Venice accounts include a free daily allowance and 500 welcome credits — no credit card required.
FAQ
Frequently asked questions
Kling 4.0 is Kuaishou's next-generation video generation model, officially launched October 15, 2026. It creates clips of 3 to 30 seconds in a single pass, supports up to 15 reference assets and 10 keyframes, and generates native stereo audio with accurate lip-sync. On Venice it comes in text-to-video, image-to-video, and reference-to-video variants.
Venice uses pay-per-clip pricing that scales with resolution and duration: a 720p 3-second clip starts at $0.59 and a 1080p 3-second clip is $0.88, with longer clips up to 30 seconds priced accordingly. No subscription is required.
Neither. Kling 4.0 is proprietary to Kuaishou with no open weights, so it cannot be self-hosted or fine-tuned. On Venice you pay per clip rather than per month, and new accounts get free welcome credits to try it. If open weights matter to you, Wan 2.7 and Wan 2.7 Enhanced are the open alternatives on Venice.
Yes. The kling-v4-image-to-video variant animates a still image into motion with the same settings as the text variant: 3 to 30 second clips, 720p or 1080p, and native audio. There is also a kling-v4-reference-to-video variant that keeps a subject consistent using up to 15 reference assets.
Kling 4.0 generates natively from 3 to 30 seconds in one pass, selectable in 1-second steps — no stitching required. That is roughly double the 15–16 second ceiling of most Venice-hosted rivals like Grok Imagine 1.5, MiniMax H3 Max, and Vidu Q3.
On Venice, Kling 4.0 outputs 720p and 1080p in 16:9, 9:16, 1:1, and 21:9 ultrawide. Kuaishou has announced 4K 10-bit HDR output, but it is listed as coming soon and is not yet available through Venice.
Choose Kling 4.0 for long takes up to 30 seconds, multi-reference subject consistency, and keyframe-controlled storytelling. Choose Grok Imagine 1.5 for faster, shorter clips up to 15 seconds when you don't need references or keyframes. Both generate 1080p video with native audio on Venice.
Venice runs Kling 4.0 under its anonymized privacy tier: prompts are not stored, profiled, or used for training, and generations aren't tied to a personal history. Note the model itself is closed-weight and not end-to-end encrypted or TEE-isolated — privacy comes from Venice's zero-retention handling of your prompts.
Yes. Its Omni Reference system accepts up to 15 reference assets — images, videos, voices, or elements — and up to 10 keyframe images can be placed along the timeline to pin poses, scene changes, and shot transitions. This is Kling 4.0's biggest edge over text-only rivals.
Use Kling 4.0 anonymously
Venice does not store your prompts. Chat history stays in your browser.