Kuaishou's Kling 4.0 renders single takes of up to 30 seconds at up to 4K with stereo dialogue, per Kling, steered by up to 10 keyframes and 15 references. Compare its specs with Kling 4.0 Flash and Kling 3.0, then make videos below with the Kling 3 series and other studio models.
Kling 4.0 is Kuaishou's video model for longer, directed scenes. According to Kling's release notes, one generation runs up to 30 seconds at up to 4K, with two-channel stereo audio, more accurate lip sync and prompts of up to 8,000 tokens. Scenes can be steered with up to 10 keyframes and 15 references. The notes also list video editing across up to 5 clips, plus video extension up to 2 minutes marked coming soon. Kuaishou announced Kling 4.0 in late September 2026, opened Kling 4.0 Flash to a limited early-access group inside Kling's own app on September 28, and scheduled the full release for October 2026. Flash is the lighter tier at 3 to 20 seconds, 720p and 8-bit SDR; the full Kling 4.0 reaches 30 seconds and 4K. Kling4 is an independent video studio where 18 models from 7 brands, the Kling 3 series among them, share one picker.
The Kling 4.0 upgrades fall into three areas: longer takes, scene control and multilingual sound. The demo clips beside each tab come from models in the studio today.
According to Kling, Kling 4.0 stretches one generation to 30 seconds, so a product reveal, a walk-through or a full exchange of dialogue plays without a cut. Framing adds 21:9 and Auto to 16:9, 9:16 and 1:1.
No Mid-Scene Cut
Tracking shots and slow reveals can run from start to finish in one take.
Ultrawide 21:9
A cinema-style frame for landscapes, chases and opening titles.
Beat-by-Beat Prompts
Prompts of up to 8,000 tokens leave room to script each beat of a long take.
Six entries from Kling's release notes for the full model and its Flash tier; items marked coming soon are labelled that way.
Kling 4.0 produces clips from 3 to 30 seconds in one generation, long enough for a full scene with dialogue.
Output comes in 720p, 1080p or 4K. The notes list 10-bit HDR at 1080p and 4K, marked coming soon.
Choices run 21:9, 16:9, 9:16, 1:1 and Auto. The ultrawide 21:9 is new compared with the Kling 3 models in this studio.
Kling 4.0 can edit existing footage from up to 5 input clips, one of them primary, 30 seconds combined.
Kling 4.0 accepts prompts of up to 8,000 tokens, room to write shot order, camera moves and exact lines of dialogue.
Kling 4.0 Flash covers text to video, image to video from a first frame and Omni Reference at 3 to 20 seconds, 720p and 8-bit SDR.
The studio below runs the Kling 3 series with Kling V3 Turbo preselected, and Kling 4.0 joins the same picker once it opens to third-party platforms.
Open the picker and choose from the studio's video models. You can switch to another model at any time in the same panel.
Type the scene or upload an image, then set the aspect ratio, resolution and clip length that the chosen model offers.
Generate the clip, review it and adjust the prompt if a detail is off. Downloads need the Basic plan or higher.
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These samples come from models in the studio today, including the Kling 3 series, Hailuo, Seedance and HappyHorse. None of them is Kling 4.0 output.
Each case pairs one Kling 4.0 feature from Kling's release notes with a specific role, scene and finished clip.
A fitness studio's video crew shoots a still of the coach at each of 10 positions in a kettlebell flow and loads them as Kling 4.0 keyframes. The model links the positions into one 30-second vertical demo in 9:16, ready for the week's feed without stitching ten short clips together in an editor.
A small-batch candle maker writes the scent name and a short tagline into the prompt, and Kling 4.0 renders them as readable label text while a match lights the wick. A second pass swaps the label into Spanish for another storefront, using the same shot description and camera move, so both listings match.
A travel vlogger planning a Patagonia episode picks 21:9 and writes a 30-second glide over a sea of clouds, with sunrise arriving at the midpoint. Kling 4.0 keeps it as one unbroken take, giving the channel an ultrawide opening shot that matches the letterboxed gimbal footage from the rest of the trip.
A chemistry teacher at an international school scripts a 30-second reaction demo with a narrator's lines, then asks Kling 4.0 for English, Spanish and Korean versions. Stereo audio and lip-synced speech let each class hear the same experiment explained in its own language, with the reagent labels readable on screen.
A brand team at a sparkling-water company loads product photos and a short packaging video as Kling 4.0 references, up to 15 in one generation, so the 16:9 launch film and the 9:16 social cut draw on the same bottle, colors and label. Review time goes to pacing rather than product details.
A family gathers five phone photos of the dog in a gold party hat, the cake and the kids, and adds them as image references. Kling 4.0 accepts up to 10 reference images per generation, so the whole party ends up in one short birthday clip for the group chat.
Release timing, specs, tiers and studio plans.
Kling 4.0 is a video model from Kuaishou, the company behind the Kling family, and the follow-up to the Kling 3 series. According to Kling's release notes, it turns prompts, images, keyframes and reference clips into videos of 3 to 30 seconds at up to 4K, with two-channel stereo audio, more accurate lip sync and readable in-video text.
Kuaishou announced Kling 4.0 in late September 2026. The first tier out was Flash, which opened on September 28 to a limited early-access group inside Kling's own app rather than as an open release. According to Kling's release notes, the full model, with 30-second and 4K output, was scheduled for October 2026, with no exact day given.
Flash is the lighter tier, built for frequent, lower-cost creation, according to Kling. The release notes list text to video, image to video from a first frame and Omni Reference, at 3 to 20 seconds, 720p and 8-bit SDR. The full Kling 4.0 runs up to 30 seconds at 720p, 1080p or 4K, with up to 10 keyframes, video editing and 10-bit HDR, the last marked coming soon.
Kling has not published its own numeric comparison, so this sets Kling 4.0's announced specs beside Kling 3.0 as offered in this studio. Length: up to 30 seconds versus 15. Framing: 21:9 and Auto join 16:9, 9:16 and 1:1. Control: up to 10 keyframes and 15 references versus a first and last frame. Sound: two-channel stereo versus native audio.
Kling's release notes list clips of 3 to 30 seconds at 720p, 1080p or 4K, framed in 21:9, 16:9, 9:16, 1:1 or Auto. The spec table includes 10-bit HDR at 1080p and 4K, but the notes mark it coming soon, and video extension up to 2 minutes carries the same label. Flash stays at 720p and 8-bit SDR.
New accounts get free credits, and Kling V3 Turbo and Kling 2.6 run on the Free plan. Downloads, Kling 3.0, 1080p output and 15-second Kling V3 Turbo clips start on Basic, and 4K needs Pro or Business. Paid plans also open more of the 18 models. Current plans and credit amounts are listed at /pricing.
No. Kling4 is an independent site, not affiliated with Kuaishou or Kling AI. It puts 18 video models from 7 brands in one picker, and a Kling name in that picker tells you which model makes a clip, not that a partnership exists. The studio runs the Kling 3 series and adds Kling 4.0 when API access opens to third-party platforms; no date is promised.
According to Kling's release notes, one Kling 4.0 generation can combine up to 15 references: up to 10 images, up to 5 reference videos, 30 seconds combined, a voice reference and up to 7 subject elements, up to 3 of them video-based. Up to 10 keyframes plan a multi-shot scene. Speech covers Korean, Japanese, Chinese, English, Indonesian, Spanish, Portuguese, French, German and more.
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