Ideogram 4.5 lands on Luma, Pika and Krea the same day

Kling 4.0 incoming: Kling teases 'news' after Dev Mode leak of 4.0 Preview/Flash

Kling 4.0's real gain is control, with up to ten keyframes per generation, but the full model is not due until October and only the 720p Flash model is live, for top-tier subscribers.

Kling announced Kling 4.0 on 28 September, and the feature many launch posts led with, native 4K, is not new: Kling shipped 4K output back in April. What is new is control. The full model, due in October with no day, price or developer access yet, can follow up to ten keyframe images in one generation and take a reference budget of 15 items that mixes stills, video clips, characters and a voice.

What you can open today is Kling 4.0 Flash, live only for Ultra yearly subscribers, at 720p and up to 20 seconds a clip. The 30-second single pass promised for October draws Kling level with Seedance 2.5, which has made 30-second takes since July, rather than ahead of it. Kling's showpiece film, THE BEAT, runs two minutes and 37 seconds, so it is many generations cut together.

In practice, treat Flash as a sketchpad for blocking shots and pacing, and save final renders for the full model. Before any of it goes into client work, read section 4.6 of Kling's terms, which bars commercial use of outputs without Kling's written permission.

Source: Kling release note and terms of service, Kling AI on X, 28 Sep 2026.

What makers built in Kling 4.0's first 72 hours (3 creator clips)

Kling 4.0 Flash went live on 28 Sep and three makers went straight at lip-sync and transitions, but all three are tied to Kling, so these are best-case tests.

Kling 4.0 Flash went live for Kling's Ultra yearly subscribers on 28 Sep, and the full model is due this month. Three makers have already shown what they think the upgrade is for, and each went straight at a different weak spot.

@hq4ai made Spare on early access to the full model, a 21:9 drama built from native 30-second shots. Watch the crying close-up on slide 2. That is the shot where a mouth drifting off its line breaks the whole scene, and tighter lip-sync is the first upgrade the maker names.

ibexdream tested transitions first. The stills come from Krea and the motion from Kling 4.0 Flash, so every cut on slide 3 is a morph. DreamsHorizon handed the new model a tongue-twister for Miss Chiff, a stylized mime character with a long-running series of her own, which is the quickest way to see whether lip-sync keeps pace with fast speech.

One caveat applies: all three are tied to Kling through early access or its creator programs, so read these as best-case tests rather than independent reviews, and run one dialogue close-up and one hard transition on Flash yourself before you price a project around the full model.

Source: Kling, hq4ai, ibexdream and DreamsHorizon on X, 28-29 Sep 2026. Every clip is credited to its maker. If one is yours and you want it removed, message us and it comes down.