Kling 4.0 Flash specs
Quick drafts and social clips up to 20 seconds, in every format
20s
One clip up to 20 seconds from a single prompt
720p
HD output for posts, drafts and tests
21:9
Cinema widescreen, down to 9:16
Sound built in
Music, voices and street noise come with the picture
40%
Fewer credits per clip than Kling 4.0
Photo to video
Start the clip from your picture
10 references
Faces, products and places from your pictures in one clip
What you can make with Kling 4.0 Flash
Hooks, product shots and drafts for every screen
Hooks and trends Five-second openers for Reels, TikTok and Shorts
Product shots A short moving shot of your product for an ad or a store page
Scene drafts Try a shot in 21:9 or 9:16, then make the final take on Kling 4.0 in 1080p
Why use Kling 4.0 Flash on Overchat AI
One account for Kling 4.0 Flash and every other top video and image model
Every top video model in one place
Kling 4.0, Seedance 2.5, Gemini Omni Flash and Grok Imagine are in the same menu, on one subscription
Compare models side by side
Run one prompt on Kling 4.0 Flash and Kling 4.0 at once and keep the take you like
Draft on Flash, finish in 1080p
Find the shot on Kling 4.0 Flash, then make the final take on Kling 4.0 with the same prompt
All your videos in one history
Every clip keeps its prompt and settings, on the web and in the iOS app
How to use Kling 4.0 Flash
Make a Kling 4.0 Flash video in three steps, right on this page
- 01
Describe the scene
Write who is in the shot, what happens, where and how the camera moves. Add what we should hear: music, voices or the noise of the street
- 02
Set the length and format
Kling 4.0 Flash is already picked. Choose 5 to 20 seconds and the format: 9:16 for Reels and TikTok, 16:9 for YouTube or 21:9 for a cinema look
- 03
Generate and download
Press Generate and get the clip. Download it, run the prompt again for a new take, or try the same prompt on Kling 4.0
Try Kling 4.0 Flash
Write a prompt and get a 720p clip up to 20 seconds
Who is Kling 4.0 Flash for
Kling 4.0 Flash suits videos you make often: posts, hooks, ad tests and drafts
Content creators
Post trends and hooks every day without waiting on long renders
Marketers and brands
Test several ad ideas before you make the final take
Small businesses
Make a short clip for a new product, a menu or a sale
Personal projects
Turn an idea, a joke or a story into a clip in a few minutes
Kling 4.0 Flash vs Kling 4.0 and other AI video models
How Kling 4.0 Flash compares with Kling 4.0 and the other video models in Overchat AI: release date, blind-test score, clip length, resolution and the photos each one takes
Kling 4.0 FlashKuaishouKling 4.0Kuaishou
Gemini Omni Flash 1.1Google
Grok Imagine Video 1.5SpaceXAI
Seedance 2.5ByteDanceExplore other video models
Other new video models in Overchat AI: Kling 4.0, Seedance 2.5, Gemini Omni Flash, Grok Imagine Video 1.5, Hailuo AI and PixVerse AI
What creators say about Overchat AI
Real reviews from Trustpilot, the App Store and Google Play. People use Overchat AI to make images and videos, compare AI models and keep chat, image and video tools in one subscription
Saves so much time
Using this gives me opportunity to do insta reels and content for my blog Saves so much time with little effort I get a lot of material to work with
Best app for image and video generation
I really enjoy creating videos with Sora and images with Nano Banano in Overchat! The app is fast, intuitive and very user-friendly
Saves a lot of money
I've started to use overchat last week and it feels very promising. Lots of AI models in one place saves a lot of money in comparison if you buy subscriptions for each one
All ai in one app
Before I used to pay separately for chat and image generations, now it’s all in one app for me Genuinely saves me money, love it thx guys
I love this app
I love this app, mostly using from web version (NanoBanana) and everything go smoothly everytime…
Google PlayLots of new models
Helps a lot! lots of new models
Affordable and simpe to use
Affordable and simpe to use. I like that I don't have to pay for several different services anymore
One subscription for all models
I like how it keeps everything organized. One subscription is enough for all major AI models, which helps me avoid paying for multiple platforms
Awesome app
Absolutely love this app
Compare different LLMs
I think I've been using it for around 3 months. it helps me because I can check and compare different LLMs and use it for urgent questions
Great experience
Great experience! It helps me able to do my work and respond to questions quickly trusting that the my responses are grammatically correct
Nice app
Nice app, everything in one place
Ask and you shall receive
I ask. CHATGP answers. I check on the answer and it's always been correct
Good and easy to use
Good and easy to use
Kling 4.0 Flash FAQ
If you have any questions,
reach out to us at hello@overchat.ai
Kling 4.0 Flash is the fast version of Kling 4.0, Kuaishou’s video model. It makes 720p clips from 3 to 20 seconds long from a text prompt, a photo or reference pictures
Kuaishou opened it to Kling Ultra subscribers on September 28, 2026, before the full Kling 4.0 came out on October 15. The API opened on November 4, 2026
Flash renders faster and costs less. Kling 4.0 makes longer clips, up to 30 seconds, in 1080p, and takes a start and an end frame and up to 10 keyframes. Flash stops at 20 seconds and 720p
From 3 to 20 seconds in one clip. In Overchat AI you pick 5, 10, 15 or 20 seconds
720p, in 16:9, 9:16, 1:1 and 21:9
Yes. Music, voices and effects come with the picture. Describe what we should hear in the prompt
No. Flash starts a clip from one picture and has no end frame or keyframes. For a set start and end, use Kling 4.0
510 credits for 5 seconds and 2,040 for 20 seconds, 40% less than Kling 4.0. The Mini plan gives 7,000 credits a month for $15
Name the subject, one main action, the place and the camera move. Change one thing at a time between takes
On this page, in the Overchat AI web app and in the iOS app. Your videos and their prompts stay in your history on every device
