发生了什么
Kling released its fourth‑generation video‑generation model, Kling 4.0, which doubles the maximum length to 30 seconds and adds multi‑modal prompting and keyframe control. A lite version is already offered to annual subscribers, while the full version is slated for an October launch.
Kling 4.0, the latest model from the Beijing‑based AI video spinoff of Kuaishou Technology, can generate video clips up to 30 seconds long—twice the length of its predecessor. The model accepts more than a dozen reference inputs, including text, images, and existing video clips, and lets users insert up to ten keyframes to steer the visual style of specific segments.
The company says the model is still in a testing phase with a limited group of users, but a lite version has already been made available to customers who hold an annual subscription. The full‑ version is scheduled for release in October, according to the announcement.
Kling raised US$2.8 billion in a July funding round led by Alibaba, Tencent, and Baidu, valuing the unit at roughly US$18 billion. Kuaishou, which retains a majority stake, is trading at about US$17 billion, reflecting a recent decline in its core short‑video business.
为什么这很重要
The upgrade marks a notable step in the competitive Chinese AI‑video market, where ByteDance’s Seedance series currently leads in realism. By extending length and allowing richer user input, Kling 4.0 could attract filmmakers, advertisers, and creative studios seeking higher‑quality AI‑generated content. The model’s early commercial rollout—via subscription and developer access—demonstrates Kling’s strategy to monetize AI video ahead of many rivals, potentially providing a new revenue stream for Kuaishou as its core short‑video business faces earnings pressure.
Extending video length to 30 seconds addresses a key limitation for creators who need longer narratives or more detailed advertising spots, making AI‑generated video more viable for commercial use.
The multi‑modal prompting and keyframe control give users finer artistic direction, narrowing the gap between AI‑generated content and manually produced footage—a factor that could drive higher subscription uptake.
Kling’s early monetisation through subscriptions and developer APIs contrasts with many rivals that rely on free or limited‑access models, suggesting a potentially sustainable revenue path for Kuaishou as its traditional ad‑driven platform struggles.
互动机制：它实际上是如何运作的
以交互方式探索这一发展背后的基础技术。
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接下来看什么
Watch for the October full release, adoption rates among enterprise video creators, and any pricing details beyond the current lite subscription. Competitive responses from ByteDance’s Seedance 2.5 and other Chinese AI video providers will also indicate whether Kling can sustain its lead.
The exact pricing and set of the full‑release Kling 4.0 in October, including whether tiered plans will be introduced for enterprise customers.
Adoption metrics such as the number of active developers, subscription conversions, and revenue generated from the new model.
Competitive dynamics, especially whether ByteDance’s Seedance 2.5 will respond with upgrades or price adjustments, and how other Chinese AI video startups position themselves against Kling’s expanded capabilities.