Kling AI 4.0: Features, Improvements and How to Use It
Discover Kling AI 4.0, its latest video generation capabilities, Omni Reference, keyframes, audio features and Kling 4.0 Flash. Explore what is new and learn how to get started with this AI video model.
Explore Official Kling AIWhat Is Kling AI 4.0?
Kling AI 4.0 is a next-generation AI video generation model developed by Kuaishou. It is designed to help creators turn written ideas, images and reference materials into video content with more control over movement, scenes and storytelling.
The model builds on earlier Kling video generation technology with features such as longer video generation, multiple keyframes, Omni Reference, improved audio-visual output and more detailed creative direction.
These capabilities make Kling 4.0 useful for exploring short films, product videos, advertisements, animations, social media content and other creative projects.
Important: Kling AI 4.0 is a model, not a guarantee that every generated video will look exactly as requested. Results can vary depending on prompts, reference materials, selected settings and the platform through which you access it.
Kling AI 4.0: Key Features at a Glance
The main improvements focus on giving creators more control over the content, timing and appearance of generated videos.
Longer Video Generation
Kling 4.0 supports single-generation videos from 3 to 30 seconds, allowing more room for a scene or short sequence.
Omni Reference
Combine reference assets such as images, videos and supported voice or element references to guide the generated result.
Multiple Keyframes
Use keyframe images to define important visual moments and guide how a scene develops over time.
Audio-Visual Generation
The model supports stereo audio generation and dialogue capabilities in multiple languages.
Camera Direction
Describe camera movements such as pans, tracking shots, push-ins and pull-outs to guide the scene.
Improved Creative Control
Work with visual styles, reference materials, scene details and more structured prompts.
What's New in Kling AI 4.0?
Kling 4.0 focuses on longer scenes, more reference options and improved control over how a video develops. Here are the changes worth understanding.
1. Up to 30-Second Video Generation
One of the major changes is the ability to generate a video between 3 and 30 seconds in a single generation. This provides more room for a complete scene, product demonstration or short visual story.
Instead of describing only one moment, creators can organize a longer prompt into stages. For example, a scene can begin with a wide view, move towards the main subject and finish with a close-up.
2. Omni Reference for Multiple Assets
Omni Reference helps guide the model using multiple reference materials. Rather than relying only on a written description, creators can provide visual and other supported references.
The official guide lists support for up to 15 reference assets in a task, with separate limits for images, videos, elements and voice profiles.
3. Multiple Keyframes for Better Scene Direction
Keyframes help define important moments in a video. You can use them to guide the starting appearance, a change in the scene, the movement between moments and the final composition.
Kling 4.0's official specifications list support for up to 10 keyframe inputs.
4. Audio and Multilingual Dialogue
Kling 4.0 includes stereo audio capabilities and supports dialogue in multiple languages. This can be useful for character scenes, advertisements and other projects where sound is part of the story.
5. More Visual and Text Control
The model supports a range of visual styles and multilingual text rendering. This can help with creative concepts such as stylized animations, product visuals, signs and on-screen text.
6. Kling 4.0 Flash
Kling 4.0 Flash is a lighter version designed for faster, frequent video creation. It has a different set of limits from the full Kling 4.0 model.
Kling 4.0 vs Kling 4.0 Flash
Both versions support text-to-video, image-to-video and Omni Reference workflows. However, they are designed for different generation needs.
| Feature | Kling 4.0 | Kling 4.0 Flash |
|---|---|---|
| Text-to-video | Supported | Supported |
| Image-to-video | Supported | Supported |
| Omni Reference | Supported | Supported |
| Video duration | 3–30 seconds | 3–20 seconds |
| Resolution listed in official guide | 720p, 1080p, 4K | 720p |
| Dynamic range | 10-bit HDR listed as coming soon | 8-bit SDR |
| Multiple keyframes | Supported | Not listed as supported |
Which one should you choose? Consider full Kling 4.0 when you need longer clips, more detailed scene control or the available keyframe features. Consider Flash when faster, shorter generation is more important. Check the actual model options and limits displayed in your account before starting.
How to Use Kling AI 4.0
If you are new to Kling 4.0, start with a simple project. The following steps explain the general process. The exact controls may vary as the platform interface changes.
Visit the Official Kling AI Website
Open Kling AI and sign in or create an account using the options provided by the platform.
Open the Video Creation Workspace
Find the video creation area and look for the Kling 4.0 model option. Available models may depend on your account and current platform access.
Choose Your Creation Workflow
Decide whether you want to start with a text description, use reference materials through Omni Reference or guide the scene using keyframes.
Write Your Prompt
Describe the subject, setting, actions, camera direction, visual style and audio requirements. For longer scenes, organize the instructions into timed sections.
Review the Generation Settings
Check the duration, aspect ratio, resolution and other available options. Review the credit cost before submitting your generation.
Generate and Review Your Video
Submit your request and review the result. If the video does not match your idea, adjust one part of the prompt or reference setup at a time.
For more detailed beginner instructions, visit our Kling AI Tutorial for Beginners.
What Is Kling 4.0 Omni Reference?
Omni Reference is a feature designed to help creators guide video generation using reference materials. It can be useful when you want to maintain a particular character appearance, product design, visual setting or movement style.
What Can You Use as a Reference?
According to the official model guide, the Omni Reference workflow supports several types of reference assets:
- Images for characters, objects, products and locations.
- Video clips for movement, timing and camera references.
- Supported elements for specific visual components.
- Voice profiles for supported voice guidance.
Example of an Omni Reference Prompt
Use Image 1 as the reference for the main character's appearance and clothing. Use Image 2 as the reference for the environment and lighting. Keep the character's appearance consistent throughout the scene. The character walks slowly through the garden while the camera follows from behind. Soft afternoon sunlight and natural movement.
The important part is explaining what each reference should control. Simply uploading multiple images without describing their roles may make the intended result less predictable.
How Do Keyframes Work in Kling 4.0?
Keyframes help you define important visual moments along a video's timeline. They are useful when you already have a clear idea of how a scene should begin, develop and end.
First Frame
Defines the opening appearance of the video. You can describe what should happen after this moment.
Middle Keyframes
Define important changes or events during the video, helping guide the progression of the scene.
Last Frame
Defines the intended final appearance of the video and helps guide the transition towards it.
Timed Story Moments
Use timing descriptions to explain when actions, camera movements or scene changes should happen.
Example Keyframe Sequence
0–5 seconds: A wide view of a peaceful garden in the morning.
5–10 seconds: The camera slowly moves towards a small wooden
bench beside a flowering tree.
10–15 seconds: A butterfly lands on one of the flowers.
15–20 seconds: The camera moves closer to show the flower
and butterfly in soft sunlight.
This is an example of how to organize a scene description. Actual keyframe images and timing controls should be set using the options available in Kling AI.
Kling AI 4.0 Prompt Guide: How to Get Better Results
A detailed prompt helps communicate what you want the model to create. Instead of using broad descriptions, explain the visible details of the scene.
| Prompt Element | What to Include | Example |
|---|---|---|
| Subject | Main person, animal or object | A white sports car |
| Action | What happens in the scene | Driving along a coastal road |
| Environment | Location and surroundings | A road beside a blue ocean |
| Camera | Camera angle and movement | A smooth side tracking shot |
| Visual style | Lighting, texture and mood | Cinematic lighting, realistic details |
| Audio | Dialogue and sound direction | Gentle ocean ambience |
Example 1: Cinematic Nature Video
A peaceful mountain lake surrounded by tall pine trees at sunrise. Gentle mist moves across the water while the first sunlight illuminates the mountain peaks. The camera slowly moves forward above the lake, creating a wide cinematic view. Natural colors, realistic water reflections and a calm atmosphere.
Example 2: Product Advertisement
A premium glass perfume bottle placed on a polished stone surface. Soft light moves across the bottle, revealing its shape and details. The camera slowly circles the product while delicate reflections appear in the background. Elegant studio lighting, clean composition and a refined luxury advertising style.
Example 3: Short Animated Story
A tiny orange cat discovers a glowing butterfly in a magical garden. The cat slowly follows the butterfly between colorful flowers. The camera gently tracks the movement, showing the garden's sparkling details and warm evening light. Whimsical 3D animation style, soft textures and a cheerful atmosphere.
Prompt tip: The official Kling guide recommends describing visible details rather than relying on vague phrases. For example, explain the lighting and materials instead of only saying "premium look." Clear positive descriptions can be more useful than long lists of negative instructions.
Explore more examples in our Kling AI Prompts Guide.
Kling AI 4.0 Video Quality and Output Options
Kling's official model guide lists several output options. However, the options available to you may depend on the model, account and platform you are using.
Resolution
The official Kling 4.0 specification lists 720p, 1080p and 4K output. The guide also describes 10-bit HDR for 1080p and 4K as coming soon. Do not assume that every output option is currently enabled for every user.
Aspect Ratio
Listed aspect ratios include 21:9, 16:9, 1:1 and 9:16, with an automatic option in supported workflows.
- 16:9: A common landscape video format.
- 9:16: A vertical format for mobile-first content.
- 1:1: A square format for suitable social posts.
- 21:9: A wider cinematic composition.
Audio Output
Kling 4.0 supports two-channel stereo audio. The official guide lists several supported languages and accents for dialogue generation. Check the current interface for the exact options available to your account.
Where Can You Use Kling AI 4.0?
You can start by checking the official Kling AI platform. Some third-party creative platforms also list Kling models, but their availability, settings, credit systems and output limits may differ.
Visit the main platform and check the available model options.
Visit Kling AI →Check its Kling 4.0 model page and platform-specific access details.
Explore Artlist →Check the current model information and availability.
Visit Topview →Check its model listing for the latest availability information.
Visit Krea →Explore its Kling model listing and current platform options.
Visit Imagine.art →Explore the Kling 4.0 model page in its AI Playground.
Visit Picsart →Check its AI model listing and supported generation workflow.
Visit InVideo →Review the model listing and available features.
Visit YouArt →Before choosing a platform: Check whether it offers the full Kling 4.0 model or a different version, which features are enabled, how credits are charged and whether generated content can be used for your intended purpose.
Kling AI 4.0: Things to Consider Before Using It
Although Kling 4.0 includes several advanced capabilities, it is important to understand that AI video generation still has practical limitations.
Results Can Vary
A detailed prompt does not guarantee an exact result. You may need to adjust your instructions and generate more than one version.
Feature Access Can Differ
Some options may depend on the account, selected model, subscription or third-party platform.
Generation Uses Credits
Review the current credit cost before generating. Longer clips and higher-quality settings may have different costs.
Reference Quality Matters
Clear and relevant reference materials make it easier to communicate the intended appearance and scene.
Official Kling AI 4.0 Guides and Videos
For the most accurate product information, use the official documentation alongside this independent overview.
Explore the official model and its video generation features.
View Feature Page →Read the official model release announcement.
Read Release Notes →Explore model instructions, settings and usage details.
Read User Guide →Read the official introduction to the model.
Read Blog →Explore the supplied official tutorial video resource.
View Tutorial →Watch the supplied Kling 4.0 video demonstration.
Watch on YouTube →Frequently Asked Questions About Kling AI 4.0
1. What is Kling AI 4.0?
Kling AI 4.0 is an AI video generation model developed by Kuaishou. It supports workflows such as text-to-video, image-to-video, Omni Reference and keyframe-based generation.
2. What are the main features of Kling 4.0?
Its main features include video generation up to 30 seconds, Omni Reference, multiple keyframes, stereo audio, multilingual dialogue support and more detailed creative control.
3. What is the difference between Kling 4.0 and Kling 4.0 Flash?
Kling 4.0 supports videos up to 30 seconds and lists higher resolution options. Kling 4.0 Flash is a lighter version with a maximum 20-second duration and 720p output in the official model guide.
4. Can Kling 4.0 generate videos from text?
Yes. Text-to-video is one of its supported generation workflows. You describe the scene in a prompt and the model creates a video based on your instructions.
5. Can Kling 4.0 animate images?
Yes. Image-to-video is supported. You can use an image as a visual starting point and describe the movement or scene development you want.
6. How long can a Kling 4.0 video be?
The official guide lists a duration of 3 to 30 seconds for Kling 4.0. Kling 4.0 Flash supports 3 to 20 seconds.
7. Does Kling 4.0 support 4K video?
The official model guide lists 4K in its specifications. However, actual availability can vary by account and platform. The guide describes 10-bit HDR for 1080p and 4K as coming soon, so check the current interface.
8. What is Omni Reference in Kling 4.0?
Omni Reference lets creators use supported reference assets to guide elements such as character appearance, objects, actions and camera direction.
9. Does Kling 4.0 support audio generation?
Yes. The official guide lists two-channel stereo audio and multilingual dialogue capabilities. The available options may depend on the selected model and platform.
10. Is Kling AI 4.0 free?
Access and generation credits depend on the current account and plan. Check the official platform for up-to-date access conditions. You can also read our Kling AI Pricing Guide.
11. Where can I learn how to use Kling 4.0?
Start with the official Kling 4.0 User Guide and our Kling AI Tutorial for Beginners.
Explore More Kling AI Guides
Continue learning about Kling AI with these related guides from Kling AI Tool.
Kling AI Tutorial
Learn the basic steps for creating AI videos with Kling AI.
Read Beginner Tutorial →Kling AI Features
Explore the main creative tools and capabilities of Kling AI.
Explore Features →Kling AI Text-to-Video
Learn how to turn written prompts into generated videos.
Read Text-to-Video Guide →Kling AI Image-to-Video
Learn how to animate images with AI video generation.
Read Image-to-Video Guide →Kling AI Prompts
Explore prompt examples and learn how to describe scenes.
Explore Prompt Guide →Kling AI Pricing
Understand available plans, credits and access conditions.
View Pricing Guide →Kling AI Review
Explore a broader overview of the platform and its capabilities.
Read Kling AI Review →Kling AI Alternatives
Explore other AI video generation tools and platforms.
Explore Alternatives →Is Kling AI 4.0 Worth Exploring?
Kling AI 4.0 brings together longer video generation, reference-based creative control, keyframes and audio-visual capabilities. It offers several useful options for creators who want more control over AI-generated scenes.
The best way to understand its capabilities is to start with a small project, explore the available settings and experiment with clear prompts and reference materials.
Visit Official Kling AIKling AI Tool is an independent informational website. It is not affiliated with, endorsed by or sponsored by Kling AI or Kuaishou. Product names and trademarks belong to their respective owners. Model specifications may change.