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Kling 4.0 Models

Kling 4.0 Models

Kling 4.0 generates 3 to 30 second videos from text, a first frame or multiple references, with 720p and 1080p output and synchronized stereo audio.

Kling 4.0 generates 3 to 30 second videos from text, a first frame or multiple references, with 720p and 1080p output and synchronized stereo audio.

All models

3 models
kwaivgi/kling-v4.0/reference-to-video
reference-to-video$0.7850

kwaivgi/kling-v4.0/reference-to-video

Kling V4.0 Reference-to-Video builds a new clip of 3 to 30 seconds from up to 10 reference images, 5 reference videos and 3 reference audios, following the subjects, motion and camera you point to in the prompt, with 720p and 1080p output and synchronized stereo audio. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

kwaivgi/kling-v4.0/image-to-video
image-to-video$0.7850

kwaivgi/kling-v4.0/image-to-video

Kling V4.0 Image-to-Video animates a first frame into a clip of 3 to 30 seconds, with an optional last frame and up to 8 in-between keyframes to direct the story, 720p and 1080p output and synchronized stereo audio. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

kwaivgi/kling-v4.0/text-to-video
text-to-video$0.7850

kwaivgi/kling-v4.0/text-to-video

Kling V4.0 Text-to-Video generates cinematic clips of 3 to 30 seconds from a text prompt, with 720p and 1080p output, four aspect ratios including 21:9 ultrawide, and synchronized stereo audio. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Kling 4.0 Models

Kling 4.0 is Kuaishou's latest generation of Kling video models, available on WaveSpeedAI as three endpoints: text-to-video, image-to-video and reference-to-video. Every endpoint generates 3 to 30 second clips at 720p or 1080p with synchronized stereo audio.

Core Model Capabilities

Text-to-Video Generation:

Create cinematic clips from a text prompt, with four aspect ratios including 21:9 ultrawide.

Image-to-Video Generation:

Animate a first frame into a video, with an optional last frame and up to 8 in-between keyframes to direct the story.

Reference-to-Video Generation:

Build a new clip from up to 10 reference images, 5 reference videos and 3 reference audios, following the subjects, motion and camera you point to in the prompt.

Use the Kling 4.0 models through a ready-to-use REST inference API with no coldstarts.

Kling 4.0 Models API — pricing & performance

Run any model in the Kling 4.0 Models collection through a single REST API. Pay per generation — no subscriptions, no minimums — with industry-leading latency on a 99.9% uptime infrastructure.

Why run Kling 4.0 Models on WaveSpeedAI

Transparent pricing

Per-call pricing for every Kling 4.0 Models model. The price is listed on each model page — no platform fees on top.

Optimized for low latency

Most Kling 4.0 Models image models complete in under 2 seconds. Video and 3D models run several times faster than self-hosted alternatives.

99.9% uptime

Multi-region failover and automatic retries keep your production traffic online — even during provider outages.

Frequently asked questions

How much does the Kling 4.0 Models API cost?+

Each model has its own per-call price listed on the model page. We bill per successful generation, with no subscription fees or minimums.

How fast are Kling 4.0 Models models on WaveSpeedAI?+

Image models in this collection typically complete in under 2 seconds. Video and 3D models depend on duration and resolution but are usually several times faster than self-hosted runs.

Can I try the API without a credit card?+

Eligible new accounts may receive $1 in promotional credits to try Kling 4.0 Models models without a credit card. Trial credits are not guaranteed for every signup; check your account balance before generating.

Are there rate limits?+

Standard accounts have generous concurrent-job limits. Enterprise plans offer custom RPM, higher concurrency, and dedicated capacity — contact sales for details.

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