Kling 4 Flash Is Out: Features, Pricing and Access
The short answer
Kuaishou's Kling account announced on November 4, 2026 that Kling 4.0 Flash is available to everyone on the Kling AI website and via API, plus MCP, CLI and AI plugins. Flash makes 3 to 20 second clips at 720p in 8-bit SDR, per the official spec table as relayed by third parties. It had been limited to Ultra Yearly subscribers since September 28.
On this page (10 sections)
What is Kling 4 Flash?
Kling 4.0 Flash is the fast, lower-cost tier of Kuaishou's fourth-generation Kling AI video model. Kling's official account announced on November 4, 2026 that it is now available to everyone on the Kling AI website and via API.
Flash first appeared on September 28, 2026 as early access for a limited group. According to Atlas Cloud's write-up of Kling's announcement, that group was Ultra Yearly subscribers. The full Kling 4.0 followed on October 15 under the tagline "You call the shots."
Kling 4 Flash release date and availability
Kling 4.0 Flash became available to everyone on November 4, 2026, per Kling's own post. It runs on the Kling AI website and via API, and Kling says it can also be reached through MCP, CLI and AI plugins.
The timeline so far, from Kling's announcements as relayed by third parties:
- September 28, 2026: Kling 4.0 announced, Flash opens to a limited group.
- October 15, 2026: full Kling 4.0 launches.
- November 4, 2026: Flash opens to everyone.
One provider page (Unifically) said Flash was not yet on any API as of its October update. Kling's post now says it is. Which API providers carry it, and when, is not detailed in the post.
Kling 4 Flash key features and specs
Kling 4.0 Flash generates 3 to 20 second clips at 720p in 8-bit standard dynamic range. It supports text to video, image to video and Omni Reference input, per Morphic's model page. The full model is the one with 30-second takes and 4K.
Several monitors displaying quick product video variations
| Spec | Kling 4.0 Flash | Kling 4.0 (full) |
|---|---|---|
| Duration | 3 to 20 seconds | 3 to 30 seconds |
| Resolution | 720p | 720p, 1080p, 4K |
| Dynamic range | 8-bit SDR | 10-bit HDR listed as coming soon |
| Multi-keyframes | Not listed in Flash spec table | Up to 10 |
| Omni Reference | Yes (per Morphic) | Up to 15 items |
| Audio | Not listed in the spec table | Two-channel stereo |
| Access | Everyone, site and API | Everyone since Oct 15 |
Atlas Cloud notes the official Flash table lists no multi-keyframe input. The table also lists no audio for Flash, so confirm in the interface before planning around sound.
The full model also adds 21:9, 8,000-token prompts, and spoken languages including English, Spanish, Portuguese, German, French and Hindi, according to Atlas Cloud and Origami's readings of Kling's spec sheet. Those rows apply to the full model, not necessarily Flash.
Kling 4 Flash pricing and free access
Kling has not published Flash-specific per-clip or per-second pricing in the material available. Flash is described as the value tier of the 4.0 lineup, but no number is attached.
For context, a third-party guide from Origami lists Kling's subscription prices as of October 5, 2026:
| Plan | Monthly | Credits/month | Commercial use |
|---|---|---|---|
| Basic | $0 | None | Not permitted |
| Standard | $8.80 | 660 | Permitted |
| Pro | $32.56 | 3,000 | Permitted |
| Premier | $80.96 | 8,000 | Permitted |
| Ultra | $159.99 | 26,000 | Permitted |
Unifically lists the full Kling 4.0 at $0.126/sec for 720p and $0.189/sec for 1080p. Those are one reseller's rates, not Flash prices.
How to use Kling 4 Flash for AI video and static ads
Flash fits the cheap, high-volume stage of a creative workflow: hook testing, product loops and motion drafts. Morphic's suggested uses include generating a dozen openings for the same ad and blocking out camera moves before committing to a longer render.
A storyboard wall and laptop used to plan short video ads
Practical fits:
- Hooks: run many 3 to 5 second openings, then keep the winner. Our hook rate and hold rate guide covers what to measure.
- Product shots: animate a still into a short loop with image to video.
- Drafts: test pacing on Flash, then rerun the winner on full Kling 4.0 for 1080p or longer takes.
You can compare Flash with other models side by side in the AdGraam Playground, or chain draft and final passes with Flow Builder. For scripted UGC-style ads, see Video Agent.
Caveat: 720p is fine for feed tests but thin for final placements. Check commercial-use terms for your plan before shipping paid creative.
What to watch next
Watch for Flash pricing, the list of API providers that carry it, and whether Flash gains audio or multi-keyframe input. None of these is detailed in Kling's post.
On the full model, Kling labels 10-bit HDR and 2-minute video extension as "coming soon," with no dates. The related Vidu Q4 preview is worth tracking as a competing fast-video option.
What people are posting
Kling 4.0 Flash Is Now Fully Available! ⚡ Kling 4.0 Flash is now available to everyone on the Kling AI website and via API. You can also access it through MCP, CLI, and AI plugins, bringing greater flexibility to your video creation workflows. With Kling plugins for https://t.co/vCHfn9WKrL
Key takeaways
- Kling announced on November 4, 2026 that Kling 4.0 Flash is available to everyone on the Kling AI website and via API.
- Flash opened as limited early access on September 28, 2026, for Ultra Yearly subscribers, according to Kling's earlier announcement.
- Flash generates 3 to 20 second clips at 720p in 8-bit SDR; the full Kling 4.0 runs 3 to 30 seconds.
- The full Kling 4.0 launched on October 15, 2026, with up to 10 keyframes and 15 mixed references.
- Kling also lists access through MCP, CLI and AI plugins.
- Flash API pricing is not published in the material available; the full model starts at $0.126/sec of 720p on one third-party provider.
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Frequently asked
When did Kling 4.0 Flash come out?
Kling 4.0 Flash opened as limited early access on September 28, 2026. Kling's official account said on November 4, 2026 that it is now available to everyone.
How do I get access to Kling 4.0 Flash?
Use the Kling AI website or the API. Kling also lists MCP, CLI and AI plugins as access routes.
How much does Kling 4.0 Flash cost?
Kling has not published Flash-specific pricing in the posts reviewed. Kling's subscriptions run from a free Basic tier to Ultra at $159.99 monthly, per a third-party report from October 5. Flash credit costs are not confirmed.
What is the difference between Kling 4.0 Flash and Kling 4.0?
Flash is the speed-tuned tier: 3 to 20 seconds, 720p, 8-bit SDR. The full model runs 3 to 30 seconds with 720p, 1080p and 4K options and up to 10 keyframes.
Can I use Kling 4.0 Flash for commercial ads?
Per a third-party report of Kling's subscription page, the free Basic plan does not permit commercial use and paid plans do. Check Kling's current terms before running paid ads.
Sources
- Kling 4.0 API: Released Oct 15, 2026, 30s Video | UnificAllyunifically.com
- Kling 4.0 Flash from Kuaishou | Fast 720p AI Video - Morphicmorphic.com
- Kling 4.0 vs Flash: Every Official Spec Before October - Atlas Cloudatlascloud.ai
- Kling 4.0 Promises a 30-Second Ad Without a Camera: What Can You ...origami.sa
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