GPT Image 2.5 API is live. Create and edit images →
PoYoPoYo
KLING 4.0 FLASH · COMING SOON

Fast creative iteration with native audio and multimodal references

Kling 4.0 Flash API: Fast AI Video Generation

Turn creative ideas into 720p videos up to 20 seconds long with Kling 4.0 Flash. Built for frequent creation, the model brings text-to-video, first-frame image-to-video, and Omni Reference into a workflow for exploring concepts, refining prompts, and developing short-form stories.

Native audio, expressive character performances, and multimodal references help connect the look, motion, and sound of a scene. Plan social content, product campaigns, and cinematic drafts around reusable assets and clear creative direction.

Key Features of Kling 4.0 Flash API

Bring creative ideas into coherent audiovisual scenes with fast video creation, multimodal references, native stereo audio, and natural camera movement.

01

Fast Video Creation for Creative Iteration

Bring advertising ideas, product reveals, and short stories into focus through quick creative iteration. Kling 4.0 Flash generates 3–20 second videos at 720p from text prompts or a first-frame image. Vary the composition, action, and pacing to develop concrete visual options, helping teams evaluate ideas together and refine the creative direction for their next campaign or scene.

  • Create 720p videos lasting 3–20 seconds
  • Start with text or a first-frame image
  • Refine concepts through successive creative variations

02

Consistent Characters and Products with Omni Reference

Build connected scenes around the characters and products that define your project. Omni Reference brings images, videos, and reusable subjects together within a shared limit of 15 references. Guide appearance with character sheets and product images, then use video references for movement and pacing. These inputs help maintain a coherent visual identity as you develop campaign variations and related story scenes.

  • Combine up to 15 multimodal references
  • Guide appearance with character and product images
  • Shape movement and pacing with reference videos

03

Native Stereo Audio for Multilingual Storytelling

Give character stories and regional campaigns a clear audiovisual identity. Kling 4.0 Flash combines native stereo audio with lip-sync and multilingual dialogue, bringing spoken lines and scene atmosphere into video creation. Describe the dialogue, language, and sound cues alongside the visual action to shape a coherent performance for brand storytelling, character scenes, and localized advertising concepts.

  • Generate video with native stereo audio
  • Synchronize spoken dialogue with character lip movements
  • Create multilingual dialogue for regional campaign concepts

04

Natural Character Motion with Expressive Camera Work

Give product showcases and character scenes a clear sense of movement and perspective. Kling 4.0 Flash combines nuanced expressions and natural body movement with camera directions such as push-ins, orbits, and tracking shots. Describe the action in your prompt or guide its rhythm with video references to create expressive scenes that connect character performance, camera movement, and storytelling.

  • Direct natural expressions, gestures, and body movement
  • Guide push-in, orbit, and tracking camera moves
  • Shape scene rhythm through motion references

Who Can Benefit from Kling 4.0 Flash API?

01

Social Media Creators

Develop short-form stories, character performances, and visual hooks with Kling 4.0 Flash. Text prompts and reusable references help creators explore several directions for a campaign, while native audio adds a useful starting point for dialogue-led clips and recurring content series.

02

Advertising and Marketing Teams

Explore campaign concepts, product reveals, and multilingual dialogue before selecting a creative direction. Kling 4.0 Flash brings visual references and sound cues into the same draft, helping teams compare variations in framing, pacing, and performance during creative review.

03

E-Commerce and Product Teams

Use product photography as a starting point for animated showcases and promotional scenes. Kling 4.0 Flash helps teams develop motion, context, and character-led presentations around product assets, making it easier to explore a consistent visual direction across a collection or seasonal campaign.

04

Film and Creative Studios

Turn shot briefs and character references into moving concepts for creative review. Kling 4.0 Flash gives directors and artists a way to test expressions, camera movement, atmosphere, and dialogue while refining a scene's composition and performance before final production.

05

Game and Virtual World Teams

Explore character introductions, environment reveals, and narrative moments from existing concept assets. Kling 4.0 Flash combines character identity, motion direction, and scene atmosphere to help teams visualize how a world or performance might feel during early creative development.

06

Education and Training Creators

Develop presenter scenes, short explanations, and character-led learning stories with Kling 4.0 Flash. Clear dialogue and visual direction help educators explore ways to explain an idea, while multilingual drafts support planning for different audiences and regional learning materials.

Kling 4.0 Flash vs Kling 3.0 Turbo — Model Comparison

Compare two Kling models designed for frequent video creation. Kling 4.0 Flash combines 720p drafts with Omni Reference and native audio, while Kling 3.0 Turbo offers Standard and Pro output tiers with structured multi-shot prompting.

CapabilityKling 4.0 FlashKling 3.0 Turbo
Creative focusFrequent creation and fast creative draftsHigh-volume video and multi-shot production
Maximum clip duration20 seconds15 seconds
Output resolution720pStandard: 720p / Pro: 1080p
Input modesText, first-frame image, Omni ReferenceText and first-frame image
Creative controlPrompt direction and multimodal referencesPer-shot prompts and duration control

Kling 4.0 Flash specifications describe the model's published capabilities. Kling 3.0 Turbo specifications describe its Standard and Pro models on PoYo.

How to Prepare for Kling 4.0 Flash API on PoYo

Step 1: Create Your PoYo API Key
Set up your PoYo account and create an API key to prepare your application for AI video workflows.
Create API Key →

Step 2: Prepare Your Creative Brief and References
Write the scene's action, camera direction, dialogue, and sound cues. Organize first-frame images, character sheets, product assets, and motion references around the creative goal. Use the feature overview to choose the inputs that fit your project.

Step 3: Plan Your Integration Workflow
Explore Kling 3.0 Turbo's documented submission and result-retrieval flow as a starting point for your application's video pipeline. Keep this model overview handy for future integration updates.
Explore Kling 3.0 Turbo →

Frequently Asked Questions about Kling 4.0 Flash API

What is Kling 4.0 Flash?

Kling 4.0 Flash is the faster member of Kling AI's 4.0 video model family, designed for frequent creation and creative iteration. It generates 720p clips up to 20 seconds long and brings text, images, multimodal references, and native audio into a practical workflow for developing video concepts.

What generation modes does Kling 4.0 Flash offer?

Kling 4.0 Flash offers text-to-video, first-frame image-to-video, and Omni Reference workflows. Start with a written shot brief, animate a supplied image, or combine visual references to guide characters, products, motion, and scene composition. Choose the mode that best matches the assets and creative direction of your project.

What video duration and resolution can I plan for?

Plan Kling 4.0 Flash concepts around 720p video and a maximum single-generation duration of 20 seconds. This format suits short-form creative drafts, product scenes, and character performances. A clear shot brief helps organize the action, pacing, and dialogue within the intended clip length.

How does Omni Reference help guide a video?

Omni Reference combines images, videos, and reusable subjects within a shared budget of up to 15 reference assets. Use character sheets to establish appearance, product images to guide design, and videos to inform motion or pacing. Address references in the prompt with identifiers such as @Image1 and @Video1.

Can Kling 4.0 Flash create video with native audio?

Kling 4.0 Flash includes native audio for audiovisual creation. Dialogue, lip-sync, and multilingual performance help connect a character's voice with the scene. Describe spoken lines, language, atmosphere, and sound cues in the creative brief to give the draft a clear audiovisual direction.

How does Kling 4.0 Flash compare with Kling 3.0 Turbo?

Kling 4.0 Flash focuses on frequent 720p creation, clips up to 20 seconds, and Omni Reference workflows. Kling 3.0 Turbo offers 720p Standard and 1080p Pro outputs, clips up to 15 seconds, and per-shot prompts with duration control. Compare your reference assets, output goals, and storytelling structure to choose a workflow.

How can I prepare my application for Kling 4.0 Flash API?

Create a PoYo API key, organize your creative assets, and outline how your application will submit video tasks and retrieve results. This page brings together model capabilities, workflow comparisons, and prompt guidance. Use it to plan your integration and follow future updates to the model's PoYo workflow.

Why Choose PoYo to Plan Your Kling 4.0 Flash Workflow

01

Plan Across the Kling Model Family

Compare Kling 4.0 Flash with Kling 3.0 Turbo in one model catalog. Connect each version's creative focus, output format, and input workflow to your project so that model selection follows the needs of your assets and intended video.

02

Build on Familiar API Workflows

Explore PoYo's existing video API documentation to understand task submission and result retrieval. Prepare your application's video pipeline around a familiar account and API-key workflow, then use model-specific documentation as each integration becomes available.

03

Connect Capabilities to Creative Goals

Review features, use cases, and practical prompt guidance together. Map character references, product assets, dialogue, and camera direction to a clear creative brief, giving your team a shared basis for evaluating concepts and planning new video workflows.

04

Prepare a Clear Production Path

Use the model overview and comparison to plan drafts, creative review, and downstream production. Keep reusable assets and integration requirements organized so your team can connect new video capabilities to an established content process as your workflow develops.