Kling 4.0 is announced. Here's what you can actually use today.

Kling 4.0 is announced, but as of October 13, 2026 the full model isn't out. Kling says it launches “this October” and hasn't named a day. What you can use today is a smaller version called Kling 4.0 Flash, in limited early access, on one plan that costs $1,429.99 a year.

Short version: the announced specs are a real step up, especially 30-second clips and keyframe control. But there's no public API, no independent benchmark and no launch date yet. If you have work due this month, plan it on tools you can use now.

What Kling announced

Kling's release note from September 28 lists the full model's specs:

• Clips of 3 to 30 seconds in one pass, at 720p, 1080p or 4K.
• Up to 10 keyframes, plus first and last frame control.
• Up to 15 references in one generation: images, short videos, subjects and a voice.
• Two-channel stereo audio, with speech and on-screen text in at least nine languages, plus regional accents.
• Aspect ratios of 21:9, 16:9, 1:1 and 9:16, so vertical is on the list.
• Editing across up to five clips, and prompts of up to 8,000 tokens.

Two features are marked “coming soon” even within the announcement: 10-bit HDR and extending a video to two minutes.

What's live today: Kling 4.0 Flash

Flash is a subset of the full model, per Kling's 4.0 page. It makes 3 to 20 second clips at 720p in standard dynamic range, from text, a first frame or references. It doesn't support first and last frames or keyframes, which are two of the headline features.

Access is narrow. On Kling's membership page, Flash appears only on the Ultra plan billed yearly. Kling also calls it a “limited rollout” and tells users to sign in to check whether it's enabled, so paying may not guarantee access. Kling hasn't published what a Flash clip costs in credits.

Regular monthly prices after the first month, as listed on October 13, 2026. First months are discounted.

Is there an API?

Not publicly. Kling's own API pricing page still lists only the Kling 3.0 family. Kling 3.0 with audio costs $0.168 per second at 1080p there, and fal charges the same for Kling 3.0 Pro.

fal's Kling 4.0 page offers early access to enterprise customers through a contact form, with no public prices or endpoints. Other providers, including Runware and WaveSpeed, say they'll add it once the API opens.

What it would mean for brands

If the full model ships as described, three things change for brand and social work:

• A full ad spot in one take. Thirty seconds in a single pass covers a standard social spot without stitching clips together.
• Storyboard-level control. Ten keyframes let a director lock the key moments of a shot instead of hoping the model lands them.
• Product consistency. Fifteen references in one generation make it easier to keep a product, a face or a set the same from shot to shot.

On rights, Kling's membership page says every paid plan includes commercial use and removes the Kling watermark. The free plan includes neither. Its FAQ adds two limits: you can't use the output to build a competing product, and checking likeness, copyright, trademark and AI-labeling rules is your job. Kling also embeds an invisible watermark and metadata in its images and videos, and runs a public detection tool.

One feature deserves caution. Kling markets a “trending replication” mode that copies the pacing and camera moves of someone else's viral clip. For a brand, borrowing another creator's video that closely is an intellectual-property question, not just a creative one.

How good is it?

It's too early to say. The Artificial Analysis video leaderboard has no Kling 4.0 entry yet, and its best Kling entries are the 3.0 models, outside the top ten. Most early hands-on reports cover Flash, and many come from resellers or creators Kling is promoting. Treat them as first impressions, not tests.

The business behind it is growing fast. Kling's revenue topped RMB 850 million in the second quarter of 2026, up more than 200% from a year earlier, according to TechNode, citing Caixin.

Should you wait for it?

Only if your deadline can move. You can't schedule work around a launch day Kling hasn't announced. For work due now, Kling 3.0 is available on Kling's API and through fal. Our guide to the alternatives after Sora's shutdown covers the other options and their commercial terms.

Three signs will tell you when the full model is live: a new entry in its release history, a post from @Kling_ai, and Kling 4.0 appearing on its API pricing page. Kling has also promoted an October 14 panel in Santa Monica as “following the launch of Kling 4.0.” That's a hint, not a date.

Whenever it lands, the brief stays the same. Thirty seconds and ten keyframes give a director more control. Someone still has to decide what happens in each one.

Facts are from Kling's own pages and the linked sources, checked on October 13, 2026. Revenue figures are press reports, not figures we checked against Kuaishou's filing. We'll update this post when the full model ships. We aren't affiliated with Kling or Kuaishou.