Kling40
What is Kling40 ?
Kling 4.0 is the flagship AI video generation model launched by Kuaishou's Kling AI, supporting text, image, and reference clip inputs to generate cinematic videos up to 30 seconds long, with up to 4K output, 10 keyframes, and 15 reference inputs, plus native stereo audio with lip sync. Suitable for social media, advertising, film pre-visualization, e-commerce product videos, and more, it works directly in the browser with no installation required.
AI Video Generation Model
- Recording time：2026-10-07
- Is it free：
Website traffic situation
Overview of Participation
(2026-09-01 - 2026-09-30)Website Latest Traffic Status
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(2026-09-01 - 2026-09-30)Statistical chart of traffic sources
Kling40 Core Features
30-second single-shot video generation
4K HD output with multiple aspect ratios
10 keyframes and 15 reference inputs
Stereo audio with lip sync
Text/image/reference video generation
Kling40 Subscription Plan
FAQ from Kling40
What is Kling 4.0?
Kling 4.0 is Kuaishou Kling AI's latest flagship AI video model that generates cinematic videos from text, images, and reference clips, with single shots up to 30 seconds long, supporting 4K output, 10 keyframes, 15 reference inputs, and native stereo audio with lip sync.
Can I try Kling 4.0 for free?
Yes, you receive free credits upon registration and can experience Kling 4.0's video generation features directly in your browser, with no installation or waiting required.
How long can videos generated by Kling 4.0 be?
Kling 4.0 supports continuous single-shot videos from 3 to 30 seconds, twice as long as Kling 3.0, enough to fully present a scene or action sequence.
What resolutions and aspect ratios are supported?
Supports 720p, 1080p, and 4K output, with aspect ratios including 16:9, 9:16, 1:1, and the newly added 21:9 ultra-wide cinematic format; 10-bit HDR is coming soon.
How does Kling 4.0 generate audio and lip sync?
Kling 4.0 natively outputs stereo audio while generating visuals, supporting dialogue, ambient sound, and sound effects, with lip sync covering more than 9 languages and accents including American, British, and Indian.
What's the difference between Kling 4.0 and Kling 4.0 Flash?
Kling 4.0 is the flagship version, ideal for final deliverables, supporting 30-second videos, 4K, 10 keyframes, and stereo audio; the Flash version is lighter and faster, suitable for drafts and high-frequency social media batch generation, with up to 720p.
Can the generated videos be used commercially?
All paid plans include a commercial use license, allowing you to use the videos for advertising, client projects, monetized channels, and product videos, with watermark-free exports.
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