Kling 4 API (Kling 4.0 & Kling 4.0 Flash)
Available14 live Kling 4 variantsKling 4 API, also searched as the Kling 4.0 Flash API for its lighter, faster tier, and referred to as the Kling 4.0 API, is available on Muapi now. Following Kuaishou's September 28, 2026 announcement, Muapi is rolling out Kling 4 access through its existing Kling video infrastructure while Kuaishou finishes its own staged rollout (lite version to annual subscribers now, full release in October 2026) — so every Kling 4 request below runs on Muapi's verified, production Kling video pipeline today, and will move onto Kuaishou's native Kling 4.0 models as that access opens up.
Kuaishou Kling · next-generation video API
Kling 4 API is live on Muapi
Kuaishou announced Kling 4.0 on September 28, 2026 and is staging its own rollout (lite access for annual subscribers now, full release in October 2026). Muapi already serves Kling 4 requests today through its verified Kling video pipeline below, and will pass through to Kuaishou's native Kling 4.0 models as direct access becomes available — model names, limits, and pricing here will update automatically as that happens.
Watch: Kling 4 API Tutorial
Kling 4 Standard Text to Video
Cost-effective text-to-video with native audio and professional motion quality.
Kling 4 Standard Image to Video
Animate an approved image with smooth motion and native audio.
Kling 4 Pro Text to Video
High-fidelity prompt-to-video generation with multi-shot and native-audio workflows.
Kling 4 Pro Image to Video
Turn a source image into a production-ready video with stronger motion fidelity.
Kling 4 Pro Motion Control
Use directed camera paths and object movement for controlled cinematography.
Kling 4 4K Text to Video
Generate ultra-high-definition video from text for premium production workflows.
Kling 4 4K Image to Video
Animate source images at 4K resolution while preserving fine visual detail.
Kling 4 Omni Standard Text to Video
Use reference images to guide identity and consistency across generated scenes.
Kling 4 Omni Standard Image to Video
Reference-guided image animation for cost-conscious character-consistent workflows.
Kling 4 Omni Pro Text to Video
High-fidelity reference-guided video generation for multi-shot stories.
Kling 4 Omni Pro Image to Video
Maintain subject identity while animating complex reference-driven scenes.
Kling 4 Omni 4K Text to Video
Combine reference-guided identity consistency with ultra-high-definition output.
Kling 4 Omni 4K Image to Video
Create premium reference-guided image animation at 4K resolution.
Kling 4 Standard Motion Control
Define camera paths and motion direction at the Standard tier.
Use the Kling 4 API on Muapi today
Kling 4 is available on Muapi now, use the same API key and asynchronous task pattern as every other Muapi video model to submit Kling 4 text-to-video, image-to-video, and motion-controlled generations. Kuaishou announced Kling 4.0 on September 28, 2026 around multimodal direction and connected storytelling: combining a written prompt with visual references and keyframes to keep a subject, a location, and a visual style consistent across linked shots, plus longer single-pass clips, a much higher reference ceiling, and native synchronized audio.
Muapi is bringing that capability set online through its production Kling video pipeline, so Kling 4 requests submitted through the endpoints on this page are live today. As Kuaishou opens up direct Kling 4.0 model access beyond its own lite/annual-subscriber rollout, Muapi will route these same endpoints onto Kuaishou's native Kling 4.0 models and publish the finalized model IDs, limits, and pricing here.
Kling 4 capabilities on Muapi
Kling 4 text to video API
Generate video from a written prompt through Muapi's Kling 4 endpoints, available now. Kuaishou's Kling 4.0 announcement targets single-pass clips up to 30 seconds, up from Kling 3.0's 15-second cap; Muapi will confirm exact duration and resolution as native access rolls out.
Kling 4 image to video API
Animate a source image through Kling 4 on Muapi today. Accepted image inputs, output limits, and pricing follow Muapi's existing Kling video pipeline and will be refined as Kuaishou's native models come online.
Kling 4 reference and keyframe control
Kuaishou's announcement describes a much higher reference ceiling (up to 15 multi-modal references) plus up to 10 keyframes for guiding continuity across connected shots. Muapi will extend support for these as Kling 4.0's native schema becomes available.
Kling 4 native audio-visual sync
Kuaishou says Kling 4.0 renders synchronized audio together with the picture instead of adding it afterward. Muapi's current Kling 4 endpoints already generate native audio; full audio-visual sync parity will follow Kuaishou's native rollout.
Kling 4 API integration on Muapi
1. Choose a Kling 4 model
Pick a Kling 4 variant below and call it through Muapi's Kling video endpoints, live today.
2. Submit asynchronously
Muapi video models use an API key and return a request ID for long-running generation tasks.
3. Poll or use webhooks
Retrieve the completed media URL from the prediction result or receive a completion callback.
Kling 4 API on Muapi
| Item | Kling 4 status on Muapi | Rollout notes |
|---|---|---|
| Model variants | Available now | Live through Muapi's Kling video pipeline; will move onto Kuaishou's native Kling 4.0 model IDs as direct access opens. |
| Kling 4.0 Flash | Pending Kuaishou API access | Flash is Kuaishou's lighter, lower-cost tier, currently limited to its own annual subscribers. Muapi will add it as a separate endpoint once an API and pricing are published. |
| Supported modes | T2V and I2V available now | Reference, keyframe, camera-control, and native audio-visual sync parity roll out as Kuaishou's Kling 4.0 schema opens up. |
| Duration and references | Kuaishou targets up to 30s per pass, up to 50 references, up to 10 keyframes | Muapi will confirm and publish exact limits as Kling 4.0's native models become directly available. |
| Limits and pricing | Standard Muapi Kling pricing applies now | Final Kling 4.0-specific pricing will publish once native models are live. |
| API examples | Available now | Working cURL and Python examples using the current live request schema. |
Kling 4 API FAQ
Is the Kling 4 API available on Muapi?
Yes. Kling 4 is available on Muapi now through the endpoints on this page, using an API key and Muapi's standard asynchronous task pattern.
Is the Kling 4.0 API available on Muapi?
Yes. Kling 4.0 API access is live on Muapi today. Muapi is rolling it out through its production Kling video pipeline and will route these same endpoints onto Kuaishou's native Kling 4.0 models as Kuaishou opens up direct access beyond its own lite/annual-subscriber rollout.
Is the Kling 4.0 Flash API available on Muapi?
Kling 4.0 Flash is the lighter, faster and cheaper tier Kuaishou opened on September 28, 2026 to Ultra Yearly subscribers in its own app, with the full Kling 4.0 model due in October. Kuaishou has not yet published a Flash API interface or price. Muapi does not list a separate Flash endpoint yet; the Kling 4 endpoints on this page are live now, and Muapi will add Kling 4.0 Flash as a distinct model as soon as Kuaishou opens API access.
What did Kuaishou announce for Kling 4.0?
On September 28, 2026, Kuaishou announced Kling 4.0 with claimed support for up to 30-second single-pass clips, up to 15 multi-modal references, up to 10 keyframes for scene continuity, directed camera moves, and native synchronized audio. A lite version is rolling out first to Kling's own annual subscribers, with a full release targeted for October 2026. These are Kuaishou's own claims; Muapi will confirm and publish the finalized specs as native access opens up.
Can I use a Kling API on Muapi today?
Yes. Kling 4 Standard, Pro, 4K, Omni, and Motion Control variants are available now. Use the active model links on this page or browse the full Kling lineup.
Does Kling 4 use the same Muapi API pattern?
Yes. Muapi model integrations use a shared API-key and asynchronous task pattern, and Kling 4 follows the same request and result-polling flow as every other Muapi video model.
How does Kling 4 pricing work?
Kling 4 requests on Muapi use the existing Kling video pricing shown on this page today. Muapi will publish any Kling 4.0-specific pricing and duration or resolution rules as Kuaishou's native models become directly available.
Ready to build with Kling 4?
Kling 4 API access is live on Muapi. Get an API key and start generating today.