Kling 4.0 will launch in October. But a third-party site, kling4.co, has already published a full pricing page: Basic at $16.6/month, Standard at $41.6, Pro at $83.3. The Pro tier states “Kling 4.0 access when available.” The 4K mode is billed at 75 credits per second, or about $3 for a 5-second clip at the Standard tier.
Kuaishou has not published API pricing for Kling 4.0. Every official statement says only that it arrives in October.
The Channel Prepared Before the Vendor
The detail reveals a structural problem in how fast AI video models iterate. When the release cadence is measured in months, distribution channels publish pricing pages before the vendor announces anything. A third-party service is using “Kling 4.0 access” as a selling point for subscriptions to a model whose price is not yet confirmed.
Kling 4.0 Flash opened for limited testing on September 28 with 1080p, native audio, and 5-second clips. The full version supports 4K 10-bit HDR, a 21:9 aspect ratio, up to 30 seconds per generation, up to 15 reference assets, and 8,000-token prompts.
Those are specifications, not differentiation.
Consistency Is the Real Competition
Third-party analysis points to what Kling 4.0 is reportedly improving: character consistency and cross-shot stability. That is Seedance 2.5's strongest area, and the metric that matters most for AI short dramas and e-commerce advertising.
Kling 3.0 led on 4K output and multi-shot narrative, but trailed Seedance on keeping the same character looking the same across shots. Kling 4.0's bet is that if consistency catches up, Seedance's default position in short drama and advertising stops being secure.
Kuaishou has not published any benchmark data on consistency. All related claims are qualitative.
The $18 Billion Question
Kling 4.0 arrives after two independent funding rounds: a first round near $3 billion in July at a post-money valuation of $18 billion, and an additional 1.4 billion yuan from a national AI fund in August.
The funding agreement includes a hard clause: if Beijing Kling does not complete an IPO by October 30, 2031, investors can demand a buyback at 8% simple annual interest.
Kling 4.0 is not just a product iteration. It needs to use pricing and usage data after launch to show investors that Kling can hold its premium in a market where Seedance holds 80% share. Seedance has already begun offering channel partners discounts of 45% to 12%. The price war has started.
P.S. Kuaishou has not published Kling 4.0's API pricing, public benchmarks, or consistency data. Whether the third-party pricing page matches Kuaishou's final pricing cannot currently be verified.
Frequently Asked Questions
Q: What is Kling 4.0?
A: Kuaishou's next-generation AI video model, launching in October 2026. It supports 4K 10-bit HDR, 21:9 aspect ratio, up to 30-second clips, 15 reference assets, and 8,000-token prompts.
Q: Why is a third-party pricing page significant?
A: A site called kling4.co published tier pricing ($16.6–$83.3/month) before Kuaishou announced official API pricing, showing channels moving ahead of the vendor.
Q: What is the real competitive metric?
A: Character consistency and cross-shot stability — Seedance 2.5's strongest area and the key metric for AI short dramas and advertising.
Q: What is the $18 billion valuation context?
A: Kling raised near $3 billion in July at an $18 billion post-money valuation, plus 1.4 billion yuan in August. The funding includes an IPO buyback clause at 8% simple interest if no listing by 2031.
