What is Kling 4.0 Pro?
Kling 4.0 Pro is the next generation of Kuaishou’s Kling AI video model — a step beyond Kling 3.0 with more photorealistic motion, more precise audio lip-sync, smarter multi-shot directing, and longer clip support. It builds on the unified multimodal architecture introduced in Kling 3.0 and refines every core capability.
Can I try Kling 4.0 Pro for free?
Yes. New accounts receive complimentary credits to try text-to-video, image-to-video, and audio-driven generation. No payment required to get started — create your first clip and see the quality for yourself.
How does Kling 4.0 Pro compare to Kling 3.0?
Kling 3.0 introduced the unified multimodal architecture — video, audio, and image generation in a single model — along with physics-accurate motion and multi-shot directing. Kling 4.0 Pro takes each of those further: sharper character and fabric detail, tighter lip-sync timing, more coherent character consistency across multi-shot cuts, and improved prompt adherence for more predictable first-generation results.
What inputs does Kling 4.0 Pro accept?
Kling 4.0 Pro accepts text prompts for T2V generation, single or paired reference images for first-and-last-frame I2V control, and audio for native lip-sync. All input modes work through the same unified platform with consistent billing.
How does native audio synthesis work?
Unlike tools that add audio in post-production, Kling generates audio during the core diffusion process. Voiceovers, dialogue, ambient sound, and music are synthesized and synchronized to motion and lip movement in a single inference pass — no separate alignment step required.
What is first-and-last-frame control?
First-and-last-frame control lets you set your clip’s exact start image, end image, or both. Kling 4.0 Pro generates the seamless motion between them — perfect for product reveals, cinematic transitions, and precisely controlled narrative arcs.
What resolutions and aspect ratios are supported?
Kling 4.0 Pro supports native 4K output across 16:9, 9:16, and 1:1 aspect ratios. Every export is a watermark-free MP4 file suitable for professional and commercial use.
What is multi-shot directing?
Multi-shot directing lets you define up to 6 camera cuts — shot type, perspective, and movement per segment — within a single generation prompt. Kling 4.0 Pro handles transitions automatically, enabling cinematic storytelling without manual editing.
Do pay-as-you-go credits expire?
No. Credits purchased via one-time top-up packages never expire. They remain in your account indefinitely — add more whenever you need them.
What is the refund policy?
All new subscription plans include a 7-day money-back guarantee. If you have a concern about a renewal charge, contact support within 72 hours and we will review it with you directly.