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KLING 4.0 · Coming Soon

Shape cinematic stories with keyframes, multimodal references, and native audio

Kling 4.0 API: 30-Second Cinematic 4K Video Generation

Kling 4.0 turns text and images into 3–30 second videos with 720p, 1080p, and 4K output. Use up to 10 keyframes to connect opening and closing compositions, character poses, and story beats, giving cinematic shots, product reveals, and short stories a clear visual rhythm.

Combine up to 15 multimodal references to carry character identity and visual style across scenes. Direct camera movement with cinematic instructions and bring performances together with native stereo sound, multilingual dialogue, and lip sync, connecting image, action, and audio into a coherent scene.

Key Features of Kling 4.0 API

Turn prompts and visual references into cinematic stories with longer takes, precise creative control, and synchronized sound.

01

Turn Text and Images into Cinematic Video

Give a scene description or still image a clear sense of action. Kling 4.0 combines text-to-video and image-to-video with instructions for subjects, composition, movement, and visual style. Describe a character entering a room or animate a product reference into a reveal, turning your creative brief into a moving scene with a defined focal point and expressive performance.

  • Generate characters, scenes, and action from text descriptions
  • Animate product images, characters, and storyboard frames
  • Shape subject composition, action, and visual style

02

Direct Every Story Beat with 10 Keyframes

Give each important moment in a shot a visual anchor. Kling 4.0 accepts up to 10 keyframes across the timeline, including first and last frames, to guide composition, character poses, and transitions. Set an opening pose, a turning point, and a closing frame so the unfolding action follows your storyboard and carries the intended rhythm of the scene.

  • Place up to 10 keyframes along the timeline
  • Define opening and closing compositions with first and last frames
  • Guide character poses, compositions, and scene transitions

03

Unify Your Creative Vision with 15 Multimodal References

Keep a character recognizable as the setting and action change. Kling 4.0 combines up to 15 multimodal references through Omni Reference, bringing images, videos, voice references, and reusable subjects into one scene brief. Use a character sheet for appearance, a video for movement, and a voice reference for delivery to carry a consistent identity and style across related shots.

  • Combine up to 15 total multimodal reference assets
  • Guide scenes with images, videos, voices, and subjects
  • Maintain recognizable character identity and visual style

04

Create Natural Dialogue with Native Stereo Audio

Let a conversation carry both the performance and the atmosphere of a scene. Kling 4.0 generates native two-channel stereo audio with dialogue, sound effects, and environmental sound, alongside synchronized lip movement. Specify a language, accent, and surrounding sounds in your scene direction to create character conversations and localized stories where speech, expression, and ambience work together.

  • Generate two-channel stereo dialogue, effects, and ambience
  • Synchronize spoken dialogue with character lip movement
  • Direct multilingual speech and accents through prompts

05

Shape Natural Camera Movement with Director-Style Instructions

Make camera movement serve the action, whether a character crosses a busy street or a product comes into view. Kling 4.0 interprets director-style instructions for push-ins, orbits, and tracking shots, combining them with scene and performance direction. Coordinate framing with body movement to build dynamic sequences, expressive close-ups, and reveals that hold attention while keeping the visual progression coherent.

  • Direct push-ins, orbits, and tracking camera moves
  • Coordinate camera movement with character action and framing
  • Keep complex movement and scene progression visually coherent

06

Tell Fuller Stories with 30-Second 4K Takes

Give a performance, product demonstration, or camera move room to develop in a single take. Kling 4.0 generates clips from 3 to 30 seconds with 720p, 1080p, and 4K output options. Choose 21:9, 16:9, 1:1, or 9:16 framing to match the story and its destination, from an ultrawide cinematic scene to a portrait social video.

  • Create single-pass video clips from 3–30 seconds
  • Choose 720p, 1080p, or 4K output resolution
  • Frame scenes in 21:9, 16:9, 1:1, or 9:16

Who Can Benefit from Kling 4.0 API?

01

Filmmakers and Creative Studios

Develop narrative scenes, acting studies, and pre-production sequences with Kling 4.0. Use keyframes to plan visual beats, references to maintain character identity, and camera instructions to explore shot direction. Longer takes give teams room to assess pacing, performance, and composition before carrying a concept into a broader production workflow.

02

Marketing and Advertising Teams

Turn campaign concepts into product reveals, character-led spots, and localized brand stories with Kling 4.0. Combine product references with camera movement and native dialogue to shape a clear message. Teams can organize shared creative assets, explore alternative scene directions, and adapt a visual concept to different campaign audiences.

03

E-Commerce Brands and Retailers

Build product demonstrations, fashion presentations, and packaging stories from existing visual assets. Kling 4.0 brings product imagery into motion while reference-based direction helps preserve a recognizable appearance. Plan key moments such as a close-up, a reveal, or a model interaction to create a focused visual story around the product.

04

Social Media Creators and Platforms

Develop short-form stories, expressive performances, and portrait-oriented content with Kling 4.0. Guide a clip with a clear prompt, reusable character references, and an intentional soundscape. The combination of visual direction and native audio helps creators explore coherent scenes that carry a narrative idea from an opening hook to a closing moment.

05

Game Developers and Virtual Worlds

Explore character introductions, world-building sequences, and cinematic concepts with Kling 4.0. Use character sheets and motion references to communicate appearance and action, then add camera direction and atmospheric sound. Teams can develop visual studies that connect a setting, a character, and a narrative moment for creative review.

06

Education and Training Teams

Plan instructional demonstrations, scenario-based lessons, and multilingual presenter scenes with Kling 4.0. Keyframes help organize a sequence of teaching moments, while native dialogue and lip synchronization support character-led explanations. Teams can adapt visual references and scene briefs to different learning contexts while keeping the presentation focused on a clear educational objective.

Kling 4.0 vs Kling 3.0 and Kling 2.6 — Model Comparison

Compare the Kling family across clip length, visual output, input options, and creative control to choose a workflow that fits your story.

CapabilityKling 4.0Kling 3.0Kling 2.6
Video duration3–30 seconds3–15 seconds5 or 10 seconds
Output resolution720p, 1080p, 4KStandard 720p, Pro 1080p, native 4K variant1080p
Input optionsText, images, keyframes, multimodal referencesText, images, first/last frames, element referencesText and images
Creative controlUp to 10 keyframes and camera directionPer-shot prompts and duration controlPrompt-driven movement and scene composition
AudioStereo sound, multilingual dialogue, lip syncNative audio and multilingual dialogueDialogue, singing, sound effects, ambience
Best-fit workflowsLong takes, precise visual control, cinematic creationMulti-shot stories and character continuityDialogue clips, product and social content

Reference: Kling’s official release notes. The Kling 3.0 family includes a native 4K variant.

Prepare Your Kling 4.0 API Workflow on PoYo

Step 1: Create Your API Key
Set up a PoYo account and create an API key to organize your integration workspace.
Create API Key →

Step 2: Organize Prompts and Reference Assets
Describe the scene, characters, camera movement, and audio. Collect reference images and map key visual beats to build a reusable creative brief. Explore existing Kling workflows for practical inspiration.
Explore Kling Workflows →

Step 3: Plan Your Integration
Review PoYo's platform documentation to prepare task submission, status tracking, and result handling for your video application.
Read Platform Documentation →

Frequently Asked Questions about Kling 4.0 API

What is Kling 4.0?

Kling 4.0 is Kuaishou's multimodal AI video model for cinematic creation. Its capabilities combine 3–30 second video generation, output up to 4K, native stereo audio, multi-keyframe direction, and multimodal references. It gives creators several connected ways to shape a scene, from its starting composition and character identity to camera movement and dialogue.

Can Kling 4.0 create videos from text and images?

Kling 4.0 supports text-to-video and image-to-video workflows. A text prompt can describe characters, action, scene style, camera movement, and sound. Reference images can establish a subject or composition, while first and last frames help shape the progression of a shot. Together, these inputs turn a creative brief into a more directed visual sequence.

How do multiple keyframes guide a video?

Kling 4.0 supports up to 10 keyframes positioned along a timeline. Each keyframe can guide a visual moment such as a composition, pose, or transition. This lets creators connect storyboard beats and shape how an action unfolds, combining visual anchors with text-based direction for the scene and camera.

What can Omni Reference bring to a scene?

Omni Reference combines up to 15 multimodal assets, including images, videos, voice references, and reusable subjects. Character sheets can guide appearance, product images can establish design details, and video references can communicate movement or pacing. Combining these materials gives creators a structured way to carry identity, style, and performance direction into related scenes.

Does Kling 4.0 generate audio with video?

Kling 4.0's audio capabilities include stereo output, natural multilingual dialogue, synchronized lip movement, sound effects, and environmental audio. A scene brief can describe spoken lines, language or accent, and ambient sound alongside the visual action. This helps creators shape a complete audiovisual performance with a consistent mood and narrative pace.

How does Kling 4.0 compare with Kling 3.0 and Kling 2.6?

Kling 4.0 emphasizes longer takes, up to 10 keyframes, and multimodal references. Kling 3.0 combines 3–15 second clips with multi-shot prompts, element references, native audio, and Standard, Pro, or native 4K output. Kling 2.6 focuses on 5- or 10-second text-to-video and image-to-video scenes with synchronized dialogue, singing, sound effects, and ambience.

Why Choose PoYo to Plan Your Kling 4.0 API Integration

01

Clear Model Selection

Compare Kling versions and explore PoYo's model catalog through capability descriptions and side-by-side specifications. Match clip length, reference inputs, audio, and creative control to your project so your team can choose a model direction with a shared understanding of the intended result.

02

Developer-Friendly Integration Resources

Use PoYo's API Key workspace and platform documentation to prepare authentication and application integration. Bring the relevant guides together with your creative requirements so developers can organize request handling, task tracking, and result delivery around the experience your application is designed to offer.

03

Trackable Task Workflows

PoYo's platform documentation covers task status queries and callbacks for asynchronous workflows. Use these resources to plan how your application follows progress, receives completion updates, and handles results, giving developers a clear foundation for connecting background generation tasks with the user experience.

04

Connected Multimodel Creative Workflows

Explore PoYo's image and video model catalog to connect concept development, reference creation, and moving scenes. Organize reusable prompts and visual assets around each production stage so your team can carry a consistent creative brief through different model workflows as the project develops.