Kling 4.0
Kuaishou's next video model: 30-second 4K clips steered by up to 10 keyframes, Flash out first.
Quick verdict
- Best for
- Creators already on Kling Ultra
- Pricing
- Flash early access on Kling Ultra Yearly plans; full model and API pricing in October
- Not ideal if
- Full model, API, and pricing not yet available
What is Kling 4.0?
Kling 4.0 is Kuaishou's next-generation video model, with a faster Kling 4.0 Flash in early access for Ultra Yearly subscribers since September 28, 2026 and the full model and API expected in October. Disclosed capabilities: up to 30 seconds in a single generation, 4K output with stereo sound, steering with as many as 10 keyframe images, and multimodal input combining images, videos, and subjects in one task. 10-bit HDR and two-minute extension are marked coming soon.
Key features
- Up to 30-second single generations
- 4K output with stereo sound
- Up to 10 keyframe images for control
- Multimodal input: images, videos, and subjects together
- 10-bit HDR and 2-minute extension coming
Pros
- Keyframe steering gives directors real control over a long clip
- Flash tier is already usable while the full model finishes
- Kling's physics and character consistency carried forward
Cons
- Full model, API, and pricing not yet available
- Early access limited to annual Ultra subscribers
- HDR is announced, not shipped
Best for
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