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Kuaishou's Kling 4.0: From Announcement to Launch
Kuaishou announced Kling 4.0 for October with a cheaper Flash version rolling out first. Early hands-on tests praised its prompt understanding and lip sync, culminating in the flagship model's official launch.
2026-09-28 ~ 2026-09-29 · 3 episodes · 12 posts
Episode 1 · Kuaishou's Kling 4.0 Set for October Launch as Flash Version Rolls Out (2026-09-28, 7 posts)
Around September 28, Kuaishou officially announced that its video generation model Kling 4.0 will be released in October this year. Ahead of the full rollout, Kling 4.0 Flash has been made available to Ultra annual subscribers for early access.
Confirmed
- Release timing: Kling 4.0 arrives in October; the Flash version is already live for Ultra annual subscribers
- Generation capabilities: up to 30 seconds per video, up to 4K resolution output, with 10-bit HDR support
- Control capabilities: up to 10 keyframes; according to @minchoi, it can also support up to 15 reference images, plus multimodal omni reference capability (@chrisfirst)
- Audio-visual quality: more stable dynamic motion, high-quality stereo audio, and more precise lip sync
- @minchoi shared 6 sample videos with prompts showcasing real generation results
Unconfirmed
- The 15-reference-image and 10-keyframe specs come from different posts; whether the official launch includes both together remains to be confirmed
Why it matters
- 30-second single-generation length and 4K/10-bit HDR specs put it in the leading tier of current video generation models, directly benchmarking flagship capabilities of overseas competitors
- Keyframe and multi-reference control boost controllability, while stereo audio and lip sync close audio-visual gaps, potentially pushing AI video toward commercially usable output
- Kling 4.0 lands in October; Flash version now live for Ultra yearly subscribers — aziz4ai · 2026-09-28
- Kling 4.0 Confirmed for October; Flash Model Live Now for Ultra Yearly Subscribers — koltregaskes · 2026-09-28
- Kling 4.0 arrives in October with 4K HDR, native 30s generation and 10-keyframe control — TheChuckTone · 2026-09-28
- Kling 4.0 arriving this October with 30s, 4K, 10-bit HDR and stereo audio — chrisfirst · 2026-09-29
- Kling 4.0 officially launches in October: 30s videos, 15 refs, 4K HDR, better lip sync — minchoi · 2026-09-29
- Kling 4.0 enters beta: 30s native generation, 10 keyframes, stereo audio, HDR — 智东西 · 2026-09-29
- Kling 4.0 coming in October with 4K output, 10-bit HDR on the way — FellMentKE · 2026-09-29
Episode 2 · Early Kling 4.0 Tests Show Stunning Prompt Understanding (2026-09-28, 3 posts)
Early testers of Kuaishou's Kling 4.0 report remarkable prompt adherence, with one video looking near cinematic. A Saudi creator even generated a complete Arabic-language narration clip from a single text prompt.
- Early hands-on with Kling 4.0 Flash: impressive prompt understanding — umesh_ai · 2026-09-28
- Early access demo shows Kling 4.0 video model following prompts in every detail — aziz4ai · 2026-09-29
- Kling 4 wows with single-prompt Arabic text-to-video, including spoken narration — aziz4ai · 2026-09-29
Episode 3 · Kling AI 4.0 Released with Lip Sync and 15-Input Reference Support (2026-09-29, 2 posts)
Kuaishou's Kling AI 4.0 launches in October, featuring 10-bit HDR, 30-second long shots, and up to 15 reference inputs. Early creators highlight its lip-sync capability, already used to produce a full music video.