What Is Kling 4.0?
Kling 4.0 is officially available. Learn how its AI video workflows bring together longer scenes, multimodal references, keyframes and editing, and choose between the full model and Flash.
Guide updated Oct 15, 2026 · Sources checked Oct 15, 2026
In this guide
Kling 4.0, in context
Kling 4.0 is a multimodal AI video model for creating and editing scenes from text, images, video and subject references. Kling AI announced its full release on October 15, 2026. The full model supports 3–30-second clips, up to 10 keyframes and up to 15 combined reference assets; Kling 4.0 Flash offers a separate short-video workflow with different limits.
Start with the subject, the action and the camera movement you want viewers to follow. Use references to carry visual identity across revisions and keyframes to arrange important moments when your mode supports them. Open the Kling 4.0 AI video generator to choose the available controls and review the credit quote. For an image-led brief, explore the Kling O4 product and character scenes to prepare your subject and setting before generating.
References describe what belongs in a scene; keyframes specify when important visual changes happen. Kling 4.0 Flash suits short scenes built from text, an image or Omni Reference. Choose the full Kling 4.0 model when your project calls for multiple keyframes, a longer native clip or integrated editing. Plan video extension separately from a single generation.
Kling 4.0 video capabilities and modes
Choose Kling 4.0 by the story you need to tell. The full model offers longer generation, keyframe direction and integrated editing; Flash focuses on shorter scenes with text, image and Omni Reference inputs. Two-minute video extension remains a separate upcoming capability.
Kling 4.0
Directed video and editing
Kling 4.0 Flash
Short video creation
Omni Reference
Reference preparation workflow
Video extension
Continue a longer story
| Mode or search name | Creative role | Capabilities and limits | Choosing a workflow |
|---|---|---|---|
| Kling 4.0 | Directed video and editing | 3–30-second generation, up to 10 keyframe images, up to 15 combined reference assets and 720p, 1080p or 4K output. The full-model specification includes stereo audio and targeted editing. The October 15 launch announcement still marks 10-bit HDR at 1080p and 4K as coming soon. | Officially released October 15, 2026; choose the controls supported by your selected workspace |
| Kling 4.0 Flash | Short video creation | 3–20-second clips at 720p in 8-bit SDR, using text-to-video, image-to-video or Omni Reference. Flash does not support first and last frames or multiple keyframes. | A distinct short-video option; use Flash’s own input and output limits |
| Omni Reference | Reference preparation workflow | Give each asset a job: images for identity and composition, video for movement and pacing, subjects for recurring characters or products. The full model’s combined limit is 15 assets, with separate limits for each input type. | Reference workflow; the per-type limits share the combined asset total |
| Video extension | Continue a longer story | Repeated video extension toward a two-minute sequence is coming soon. It is separate from the full model’s 30-second native generation and Flash’s 20-second limit. | Coming soon; not a current 120-second single generation |
Kling 4.0 references, keyframes, and continuity
References establish the visual ingredients
Use images to define a face, product details or setting; use video to guide performance, camera movement or pacing. The full model lists up to 15 assets total, including up to 10 images, 5 videos totaling 30 seconds and 7 subjects, of which up to 3 can be video-based. These limits share the combined total.
Keyframes set the timing of a story
Kling 4.0 supports up to 10 keyframes across a 3–30-second sequence. Use them for deliberate visual changes: a subject entering, a product appearing or a scene moving toward its final composition. Start with a few clear moments and review the transitions between them. Flash does not support first/last frames or multiple keyframes.
Recreate a concept and revise selected details
Creative Recreation uses a reference video’s pacing and composition alongside your own subjects or products. Targeted editing lets you revise an expression, background, movement or visual style while retaining the wider scene. State the change clearly and review identity, lighting and continuity after each revision.
Choose sound, output and extension separately
The full Kling 4.0 specification includes stereo audio and output up to 4K. The October 15 release still lists 1080p/4K 10-bit HDR as coming soon, and video extension toward two minutes remains separate from native clip length. Flash is specified at 720p in 8-bit SDR. Select the output controls actually offered for your generation.
Planning keyframes for the full Kling 4.0 model
Subject · product · setting
Key moments
- 01Opening composition
- 02Main action
- 03Closing composition
A continuous scene
Creative briefs to explore with Kling 4.0
A product reveal with a stable identity
Build a product reveal around one camera movement and one selling point. Product references establish shape and materials; a video reference can guide the pace of the reveal. When using the full model’s editing workflow, change one detail at a time and check that branding, reflections and product proportions remain consistent.
A character across connected shots
Organize an arrival, a reaction and an exit around the same character references. Place keyframes at the moments where the action or composition must change. Review the face, clothing, props and lighting across the full clip, then adjust the weakest transition before adding more scenes.
A destination with a clear atmosphere
Choose an opening view, one camera path and a closing composition. A reference clip can guide the rhythm of a travel concept. For a short Flash brief, describe the progression in the prompt; reserve timed keyframe planning for a mode that supports it.
Kling 4.0 vs Kling 3.0: which workflow fits?
Kling 4.0 expands the creative choices around duration, references, timeline direction and editing. Both generations support 4K options, so resolution alone does not explain the upgrade. Compare the same scene brief and keep the full model’s capabilities separate from Flash’s limits.
| Question | Kling 3.0 today | Kling 4.0 capabilities |
|---|---|---|
| Native duration | 3–15-second generation in the official comparison. | Full model: 3–30 seconds. Flash: 3–20 seconds. Extension toward two minutes is coming soon. |
| Keyframes and references | First and last frames are supported; reference combinations have smaller limits that depend on whether video is included. | Full model: up to 10 keyframes and 15 combined references. Flash: text, image and Omni Reference, without first/last frames or multiple keyframes. |
| Audiovisual output | The official comparison lists 720p, 1080p and 4K, 8-bit SDR and single-channel audio. | Full model adds stereo audio; 1080p/4K 10-bit HDR remains coming soon in the October 15 release. Flash: 720p, 8-bit SDR. |
| Editing and workflow | Video editing is available through Kling 3.0 Omni workflows. | Kling 4.0 combines generation, references and targeted editing. The October 15 release adds access through the refreshed web interface, MCP and CLI; developer API access is still coming soon. |
Kling 4.0 release, pricing, and API
Release and access
Kling AI announced Kling 4.0 as fully available on October 15, 2026, through its refreshed web creation interface, MCP and CLI. On this site, start in the Kling 4.0 AI video workspace and select the inputs and settings available for your scene. Flash and the full model retain different specifications.
Pricing and free access
Review the credit estimate for your selected mode, duration and output settings before submitting. A model release does not mean every setting is free or included in every plan. This site shows the applicable quote in the generator; use the pricing page to compare the credit options available to you.
API availability
The October 15 launch announcement lists API access for enterprise customers and developers as coming soon. MCP and CLI access are announced separately and do not establish general API availability. Wait for the published API model identifiers, request parameters and prices before planning a Kling 4.0 API integration.
Common questions about Kling 4.0
Kling 4.0 names a model generation; 4K names an output resolution. Both Kling 3.0 and the full Kling 4.0 specification include 4K options. Flash is specified at 720p in 8-bit SDR, and 1080p/4K 10-bit HDR remains coming soon in the October 15 launch announcement.
The full Kling 4.0 model supports 3–30-second generation, up to 10 keyframes, richer combined references, stereo audio and editing. Flash supports 3–20-second clips at 720p in 8-bit SDR with text, image and Omni Reference inputs. Flash does not support first/last frames or multiple keyframes.
Kling 4.0 supports native generation from 3–30 seconds, while Flash supports 3–20 seconds. Repeated video extension toward a two-minute sequence is still listed as coming soon. A two-minute sequence is separate from a single generation.
Give each reference a role: an image for identity or composition, a video for motion or pacing, and a subject reference for recurring characters or products. Keep stable details consistent and separate camera direction from action. References describe scene ingredients; keyframes, where supported, place moments on the timeline.
Yes. Kling AI announced Kling 4.0 as fully available on October 15, 2026, with web, MCP and CLI access. The same announcement still marks 1080p/4K 10-bit HDR and developer API access as coming soon. Check your selected mode’s controls and credit estimate before creating.
No. The official Kling 4.0 feature FAQ explicitly excludes first/last frames and multiple keyframes from Flash. Flash supports text-to-video, image-to-video and Omni Reference; use a supported model for precise keyframe timing.
Bring your Kling 4.0 scene into focus
Start with a written idea or reference image in the Kling 4.0 AI video generator. Choose your mode, review the credit quote and refine the scene from the first result.