Kling 4.0 Is Coming Soon to Yihook: 30-Second AI Videos, 4K HDR, and Multi-Keyframe Control

Kling 4.0 is coming soon to Yihook, bringing more realistic visuals, greater creative control, and more complete storytelling.

The update introduces native 30-second video generation, up to 10 keyframes, and up to 15 multimodal references. Creators get more time to develop a scene and more ways to shape how it unfolds. Output at up to 4K with 10-bit HDR, stereo audio, and more accurate lip sync further improves the audiovisual experience.

Kling has announced an October 2026 release for Kling 4.0. Yihook has already begun preparing its integration and plans to make the new capabilities available as soon as the model officially opens for access.

What’s New in Kling 4.0?

Generate a Full 30-Second Scene

Kling 4.0 supports native 30-second video generation, giving action, emotion, and storytelling more room to develop.

A character can enter a setting, notice something unusual, and react over the course of a longer clip. Product reveals, detail shots, and demonstrations also have more time to unfold.

You can build a shot around a continuous action so viewers can follow what happens, or vary the pacing between an opening, a buildup, and a twist to give a short video a complete narrative arc.

Guide Key Moments with Up to 10 Keyframes

Kling 4.0 supports up to 10 keyframes, helping creators specify how a video begins, develops, and ends.

A fantasy short might move from a character standing in an empty station to a change in lighting as a train arrives, then reveal another world when the doors open. A product video might progress from a material close-up to a full product view and then show it in use.

Keyframes provide visual guidance for these important moments. Creators can focus on how the images connect while refining movement, composition, and narrative direction.

Define Your Creative Direction with Up to 15 Multimodal References

Kling 4.0’s Omni Reference supports up to 15 multimodal references. Kling also highlights improvements in consistency and video editing.

A character’s appearance, the atmosphere of a setting, movement, and vocal delivery can all contribute to a creative brief. Richer reference inputs offer more ways to communicate those intentions and reduce ambiguity in text-only descriptions.

For a recurring story, references can help establish a clearer direction for a returning character. For brand content, they can communicate product appearance and visual style more precisely. For music videos, they offer ways to explore the relationship between the performer, the setting, and the performance.

Bring Visuals and Sound Together with Up to 4K and 10-bit HDR

According to Kling’s announcement, the audiovisual upgrades include up to 4K resolution, 10-bit HDR output, more stable motion, high-quality stereo audio, and more accurate lip sync.

These changes span visual detail and dialogue performance. Creators can plan lighting, materials, character movement, and layers of sound so that visuals and audio work together within a scene.

Kling 4.0 also adds video extension capabilities and support for multiple languages, accents, and dialects, offering more expressive options for different audiences and characters.

Kling 4.0 vs. Kling 3.0: Key Improvements at a Glance

Capability	Kling 3.0 Series	Announced Kling 4.0 Capabilities	What Changes
Length per generation	3–15 seconds	Native 30-second generation	Doubles the maximum duration, allowing more complete action and story development
Keyframes and shot control	Start and end frames, automatic and custom multi-shot storytelling	Up to 10 keyframes	More intermediate visual guidance for important narrative moments
References and consistency	Multiple image references, video-based subject references, and subject binding; limits vary by mode	Up to 15 multimodal references through Omni Reference, with improved consistency highlighted by Kling	Richer reference combinations and creative control
Image quality and color	Native 4K added in a subsequent update	Up to 4K with 10-bit HDR output	4K is not new to the series; 10-bit HDR is a key focus of this announcement
Audio and lip sync	Native audiovisual generation, character voice control, and lip sync	High-quality stereo audio and more accurate lip sync	Further improvements to sound and dialogue synchronization

This comparison draws on Kling’s official 3.0 documentation and subsequent updates, alongside its 4.0 announcement. Capabilities vary across 3.0 modes. Improvements described for 4.0 reflect Kling’s claims; final settings and performance depend on the released version.

Best Use Cases for Kling 4.0

From short drama studios to independent creators, different teams have different needs for AI video. Based on the announced capabilities, the following use cases are worth exploring. Actual results and available settings will depend on the released version.

Short Dramas and Animation: Give Characters Time to Perform

Drama and animation creators care about more than a character’s appearance. They need viewers to understand what the character does, why they do it, and how their emotions change.

Native 30-second generation gives actions and emotional shifts time to develop. Multiple keyframes can guide narrative turning points, while multimodal references establish character design and scene style. For teams producing short dramas, animated clips, or story trailers, these controls offer a useful way to structure a scene.

Brand Ads and Product Videos: Show How a Product Fits into Everyday Life

Brand teams often want a video to show both what a product looks like and how it fits into the viewer’s life.

Keyframes can help plan close-ups, character interactions, and the closing shot. Multimodal references can communicate product appearance, atmosphere, and brand style. Teams can explore different creative directions for the same product to find an approach that speaks to their audience.

Music Videos and Visual Art: Build an Emotional Progression

Music videos need a distinctive visual style and an emotional connection between shots. The reason one scene leads into another often matters more than the complexity of any single image.

Longer generation supports sustained performances and shifts in atmosphere, while multiple keyframes can define important visual moments. Creators can then align generated clips with the music’s rhythm during editing.

Social Media Content: Turn an Idea into an Ongoing Series

Social creators need fresh stories while keeping their characters and style recognizable.

Multimodal references provide direction for recurring characters and a consistent visual identity. A 30-second duration leaves room for an opening, story development, and an ending, helping creators build an ongoing series around a familiar character and a clear theme.

Multilingual Character Videos: Adapt Dialogue for Different Audiences

When creating for different regions, language is only part of the performance. Tone, pauses, and accent also shape how viewers understand a character.

Kling 4.0’s announced support for multiple languages, accents, and dialects, together with its lip-sync improvements, opens up more options for character dialogue. Teams can adapt scripts to each audience and review pronunciation, wording, and delivery for naturalness.