Preview — status as of October 13, 2026. Kling 4.0 is announced, not launched. Only Kling 4.0 Flash is usable, in limited early access since September 28. The full model is due “in October” with no exact date, and there is no API, no price list and no independent benchmark yet. This page records what Kuaishou has announced and will be updated at launch.
Kling 4.0 is the next generation of Kuaishou’s video model family. Kling announced it on September 28–30, 2026 under the banner “You Call the Shots,” and the pitch is control rather than raw quality: longer single-pass clips, timed keyframes, far richer references and built-in editing, on top of the native 4K and native audio that Kling 3.0 already had.
Kling 4.0 at a glance
Specs below come from Kling’s own comparison pages. Treat the full-model column as announced, not shipped.
| Kling 3.0 | Kling 4.0 Flash (early access) | Kling 4.0 (full, announced) | |
|---|---|---|---|
| Availability | Generally available, with API | Limited early access, Ultra yearly plan | ”Coming in October” |
| Video length | 3–15 s | 3–20 s | 3–30 s |
| Resolution | 720p / 1080p / 4K | 720p | 720p / 1080p / 4K |
| Dynamic range | 8-bit SDR | 8-bit SDR | 10-bit HDR at 1080p / 4K (coming soon) |
| Keyframes | Start and end frame | Not listed | Up to 10 keyframes |
| References | Up to 7 images, or 1 video + 4 images | Omni Reference (limits not published) | Up to 15 assets: 10 images, 5 videos (30 s combined), 7 subjects |
| Audio | Single-channel, 5 main languages | Not listed | Two-channel stereo, adds Portuguese, German, French, Hindi and more |
| Editing | Through 3.0 Omni workflows | Not listed | Native — up to 5 clips, 30 s combined |
| Prompt length | — | — | Up to 8,000 tokens |
What’s new in the full model
- Native 30-second generation. Twice Kling 3.0’s 15 seconds, in a single pass, with Kling designing for narrative continuity across the longer clip.
- Multiple keyframes. Up to 10 keyframe images set visual milestones along the timeline — for example a character entering at 0 seconds and a closing campaign shot at 28 — instead of controlling only a start and end frame.
- A bigger Omni Reference. Up to 15 combined assets per generation, including voice references, depth-map or white-model videos for motion transfer, and video-based subjects.
- More stable dynamic motion. Fight scenes, sports, dance and large camera moves such as tracking and orbit shots are the target.
- Audio and language. Two-channel stereo, improved lip-sync and wider language coverage, while keeping accents and dialects such as Cantonese and Sichuanese.
- Native video editing and Creative Recreation. Modify characters, backgrounds, camera, style, weather or materials in existing footage, or borrow a reference video’s pacing and shot structure and swap in your own product.
- 21:9 ultrawide output and, once enabled, 10-bit HDR.
Kling also lists repeated video extension toward a two-minute sequence as coming soon. That is separate from the 30-second native limit and is not a single 120-second generation.
Availability and pricing
- Flash early access: opened September 28. Kling’s release note says “a limited group of users”; its announcement names Ultra yearly subscribers, and third-party coverage of the membership page lists it only on the Ultra annual plan ($1,429.99 per year, 26,000 credits a month). Free, Standard, Pro and Premier plans do not list it.
- Full model: “launching in October.” As of October 13 no exact date has been published.
- API: Kling’s developer page shows Kling 4.0 as Coming Soon / Preview, and the API pricing page states that its current packages don’t support Kling 4.0. No model ID, endpoint or per-second rate has been published.
- Reference pricing (Kling 3.0 API list rates): $0.084/s at 720p and $0.112/s at 1080p without native audio, $0.126/s and $0.168/s with it, and $0.42/s at 4K. Kling 3.0 Turbo is $0.112/s at 720p and $0.14/s at 1080p with native audio. Expect 4.0 to be priced separately — Kling has said nothing about it.
How it compares
- vs Kling 3.0: 3.0 is the shippable choice today with an API and published prices. 4.0 promises longer clips, keyframes and heavier references, but you cannot buy it at scale yet.
- vs Seedance 2.5: both announce native 30-second clips and rich multimodal references (Seedance cites up to 50 assets); Kling adds keyframe timing and built-in editing. Neither has independent head-to-head data yet.
- vs Wan 3.0: Wan 3.0 is already in public beta with $0.05–$0.20 per second API pricing and 30-second clips; Kling 4.0 has no price at all.
- vs Veo 3.1: Veo 3.1 is the established, API-priced quality leader for polished native-audio clips. Kling 4.0 may beat it on control, but it is a paper claim until the model ships.
What to watch for
- The October launch date and whether 1080p, 4K and 10-bit HDR are live on day one.
- API model IDs and per-second pricing, and whether Kling 4.0 reaches third-party hosts such as fal.ai or Replicate.
- The first independent Elo scores on Artificial Analysis and Arena.
- Kling’s strict content filter, which already limits what Kling 3.0 allows.
Limitations
- Unverified specs. Everything beyond Flash comes from Kling’s announcement, not hands-on testing; “coming soon” features may change before launch.
- No pricing or benchmarks. Cost per clip and quality against rivals are unknown.
- Closed and gated. Flash access depends on a high-priced yearly plan.
See the video models directory and our Best AI Video Generator ranking for models you can use today.
Best for
- Storyboard-led and product-demo clips that need timed keyframes (once the full model ships)
- Reference-heavy ad creative that combines images, subjects, video and voice references
- Dialogue-driven and multilingual video with stereo sound
- Revising existing footage — backgrounds, characters, camera moves and style — without rebuilding the scene
Pros & cons
Strengths
- Announced specs emphasize control — 30-second native clips, up to 10 keyframes, up to 15 combined reference assets (10 images, 5 videos, 7 subjects) and prompts up to 8,000 tokens
- Two-channel stereo audio with more languages (adds Portuguese, German, French, Hindi and more) and sharper lip-sync, plus 21:9 ultrawide output
- Editing built into the multimodal workflow — up to 5 input clips (30 seconds combined) and a Creative Recreation mode that reuses a reference video's pacing and structure
- 10-bit HDR at 1080p and 4K is planned, versus 8-bit SDR on Kling 3.0
Limitations
- Not generally available — the full model is "coming in October" with no exact date, and Flash is limited early access (Ultra yearly subscribers only)
- No public API, API model ID, credit price or independent benchmark yet; Kling's API packages explicitly exclude it
- Flash is a lite tier — 3 to 20 seconds, 720p, 8-bit SDR, no first/last frame, multi-keyframe or video editing listed
- Several headline specs (10-bit HDR, two-minute video extension) are marked "coming soon", so launch behavior may differ from this page
Frequently asked questions
Is Kling 4.0 available now?
Only partly. Kling 4.0 Flash opened to a limited group on September 28, 2026, which Kling's announcement and third-party coverage tie to Ultra yearly subscribers. Kling says the full Kling 4.0 will launch in October, with no exact date, and its API pricing page says current packages don't support Kling 4.0.
What is the difference between Kling 4.0 and Kling 4.0 Flash?
Flash is the lighter early-access model, which Kling describes as combining fast generation with excellent value. Per its spec sheet, Flash makes 3 to 20 second clips at 720p in 8-bit SDR with text-to-video, first-frame image-to-video and Omni Reference, and does not list first/last frames, multi-keyframes or video editing. The full model is announced with 3 to 30 seconds, 720p/1080p/4K, up to 10 keyframes, up to 15 references and editing.
How is Kling 4.0 different from Kling 3.0?
Per Kling's comparison, 4.0 extends generation from 15 to 30 seconds, adds up to 10 keyframes, raises reference limits to 15 combined assets, adds two-channel stereo and more languages, plans 10-bit HDR, and folds video editing into the core workflow. Both support 4K, so 4.0 is not simply a resolution upgrade.
How much does Kling 4.0 cost?
Kling has not published prices for Kling 4.0 or Flash. Flash early access is listed under the Ultra yearly plan at $1,429.99 per year with 26,000 credits a month, but there is no per-generation credit price on a public rate card. Kling 3.0 API list prices start at $0.084 per second.
Does Kling 4.0 have an API?
Not yet. As of mid-October 2026, Kling's developer pages show a Kling 4.0 API as coming soon and tag it Preview, with no model ID or price list. Don't guess identifiers such as kling-v4 until Kling documents them.
Is Kling 4.0 better than Seedance 2.5 or Veo 3.1?
There is no independent ranking yet, so nobody can say. On paper, Kling 4.0 matches Seedance 2.5 and Wan 3.0 on 30-second clips and adds 10-keyframe timing and stereo audio, but unlike Veo 3.1 it cannot be used at scale today. Re-check once the full model and an independent benchmark are live.
Sources
- Kling AI — Kling 4.0 vs 3.0: What's Different in the New Model?
- Kling AI — Inside Kling 4.0: A Complete Guide to AI Video Creation
- Kling AI — Release notes (2026-09-28: Meet All-New Kling 4.0)
- Kling AI — API pricing
- Atlas Cloud — Kling 4.0 vs Flash: every official spec before October
- GetStepSnap — Kling 4.0 release date and API