TL;DR
Kling AI launched Kling 4.0 globally on Friday: up to 30 seconds of video in a single generation, with up to 10 keyframes and 15 image, video, and audio references to steer characters and scenes. The promised 10-bit HDR output at 4K and the 21:9 ultrawide format are still “coming soon” — and the company’s own two launch-day releases disagreed on whether they are live. Pricing wasn’t announced either.
What launched
Kling AI announced the global launch of Kling 4.0 on October 16, 2026, following a September 28 unveiling. The headline upgrade is native 30-second generation in one pass — double the 15-second ceiling of its predecessor — aimed at long takes and continuous storytelling instead of stitching short fragments together.
The other two headline upgrades: more stable dynamic motion and complex camera movements, and a new Omni Reference system that accepts up to 15 reference assets (images, video, and audio) and 10 keyframe inputs per prompt, for frame-level control over characters, scene transitions, and story progression.
Directing, not just generating
The pitch is control. Ten keyframes let a creator pin down what happens at specific beats across a 30-second sequence instead of specifying only the opening and ending. The 15 references keep a character consistent across shots and episodes — Kling is explicitly chasing character-driven storytelling, not isolated clips.
Existing footage is editable too: swap characters, backgrounds, movement, or camera direction on a generated clip. And a “Creative Recreation” mode borrows the pacing and composition of a reference video while replacing its characters or products — useful for testing several versions of one ad concept without rebuilding every sequence. Kling reports more than 100 million users and 50,000 enterprise customers across advertising, film, television, and gaming; those numbers are self-reported.
What is still a promise
Here is where the launch-day paperwork contradicts itself. One Kling release says 10-bit HDR output at 4K and 1080p, plus a 21:9 ultrawide format, “will soon” be supported. A second Kling release issued the same day lists 4K HDR and 21:9 as supported now. An independent industry write-up flagged the mismatch — so treat HDR as not-shipped until you can actually select it in the product.
Pricing for Kling 4.0 wasn’t announced, and enterprise and developer API access is listed as “coming soon” with no date. A faster Kling 4.0 Flash tier exists in early access. Until the company’s own releases agree on what’s live, test the model against your own hardest shot before committing a production budget to it.
Why makers should care
Kling also opened the model to AI agents through a Kling MCP server and a command-line interface, so agents can request video generation as part of a larger task. Kling 4.0 and 4.0 Flash are additionally announced as coming to Adobe Firefly — “coming soon”, no date given.
The practical read: 30 seconds in one pass only matters if the motion holds up at full length and the characters don’t drift between keyframes. The model’s own claims about stability under sweeping camera moves came from a creator working with the company, not an independent test. If you generate video for a living, the next 30 days of community tests will tell you more than launch-day claims — run your own whip pan and see.