Kling 4.0 Video Generator
Kling 4.0 renders up to 30 seconds in a single generation, at up to 4K, following as many as 10 keyframes. Kling AI announced it in its official release note in September 2026. This page collects the published specs for Kling 4.0 and the lighter Kling 4.0 Flash, what changed from Kling 3.0, and when you can use it, straight from the original announcement.
Kling 4.0 examples: 20 seconds in one pass
Kling 4.0 results posted on X by early-access creators. Long takes with no cuts, and the motion holds to the last frame.
Generate with Kling 3.0 now, before Kling 4.0 launches
When Kling 4.0 becomes available, it will be selectable right here.
Kling 4.0 status: announced, full launch expected in October
According to Kling AI, the full Kling 4.0 model launches in October 2026; no exact date has been given. Kling 4.0 Flash opened to a limited group of users for early access on September 28. Pricing and API timing have not been announced. This workspace generates with the available models shown in the model selector and never relabels their output as Kling 4.0.
Kling 4.0 official specifications
Taken from the "Kling 4.0 Core Capabilities and Specifications" table in Kling AI's release note. Figures are reproduced as published.
- Modes
- Text-to-video, image-to-video, first & last frames, multi-keyframes, Omni Reference
- Duration
- 3–30 seconds per generation
- Resolution
- 720p / 1080p / 4K
- Dynamic range
- 10-bit HDR at 1080p and 4K, listed as coming soon
- Aspect ratio
- 21:9 / 16:9 / 1:1 / 9:16 / Auto
- Multi-keyframes
- Up to 10 keyframe images as input
- Audio output
- Two-channel stereo, with more accurate lip sync
- Speech languages
- Chinese, English, Japanese, Korean, Spanish, Portuguese, German, French and more
- On-screen text
- Legible text in multiple languages, including Japanese, plus emoji
- Prompt length
- Up to 8,000 tokens
- References
- Up to 10 images, 5 videos (30 seconds combined), 7 elements and voice references — 15 items per generation
- Video editing
- Up to 5 input clips including 1 primary video; each 3–30 seconds, 30 seconds combined
- Video extension
- Extend multiple times up to 2 minutes (coming soon)
What is new in Kling 4.0
Kling AI groups the Kling 4.0 upgrade into audiovisual quality, reference control, long-form storytelling and creative range.
30-second takes in one pass
Kling 4.0 generates up to 30 seconds at once, so a long continuous shot or a short story with a beginning and an end comes out whole instead of stitched together.
Ten keyframes to direct the story
Pin up to 10 keyframe images and let Kling 4.0 animate the path between them — character states, scene changes and story beats decided up front, like a director's board.
Up to 15 references
Combine images, clips, elements and voice for up to 15 references. Drive motion and camera with depth maps or reference clips, and recreate a proven video with your own product or character.
Stereo audio and HDR
Audio moves to two-channel stereo with better lip sync. 10-bit HDR at 1080p and 4K (coming soon) and the 21:9 ultrawide format push the output toward cinema grading.
Kling 4.0 examples: Japanese dialogue and on-screen text
Multi-character Japanese dialogue and legible on-screen text, straight from the prompt. Press play with sound on the clips with audio.
Kling 4.0 Flash specifications
Kling 4.0 Flash is the fast, lower-cost member of the Kling 4.0 lineup. A limited group of users has had early access since September 28.
- Modes
- Text-to-video, image-to-video (first frame), Omni Reference
- Duration
- 3–20 seconds
- Resolution
- 720p
- Dynamic range
- 8-bit SDR
Kling 4.0 Flash examples: texture and voice
Even the lighter Kling 4.0 Flash gets this far on texture and voice.
Kling 4.0 vs Kling 3.0
Compared with the Kling 3.0 you can run on this site today. Kling 4.0 figures come from the release note; Kling 3.0 figures are this site's model specs.
Length: 30 vs 10 seconds
Kling 4.0 runs 3–30 seconds per generation. Kling 3.0 here runs 3–10 seconds, or up to 15 seconds total in multi-shot.
Frame control: 10 vs 2
Kling 4.0 accepts up to 10 keyframes. Kling 3.0 takes a start frame and an end frame.
Both reach 4K
Kling 3.0 and Kling 4.0 both output 720p, 1080p and 4K. Kling 4.0 adds 10-bit HDR (coming soon) and 21:9.
Models to use before Kling 4.0 launches
The closest Kling 4.0 workflows run today on these models.
Kling 4.0 FAQ
Kling 4.0 primary sources
Kling 4.0 specs and release status on this page are based on the official announcements below.
Start with Kling 3.0 today
Kling 3.0 renders native audio and multi-shot up to native 4K, available right now. Credit cost is shown before you generate.