Flux 3 Klein key features
New images in seconds, clean text, up to 10 reference photos in one prompt and edits that keep your character the same.
Images in seconds
In our tests Flux 3 Klein made an image in 6 seconds on average, four times faster than GPT Image 2.5.
Clean text in images
Put the words in quotes, and Klein spells them into the picture: names, slogans and signs.
Up to 10 reference photos
Take a person, an object, a place and a sky from different photos and get them in one scene.
Edits that keep the character
Change a character again and again, and its face, shape and style stay the same.
How to use Flux 3 Klein on Overchat AI
Make a Flux 3 Klein picture in four steps right on this page: write a prompt, add your photos, pick a style and generate.
- 1
Write a prompt
Describe the image in the box at the top of this page: the subject, the place, the light and the mood. Put any words that should appear in the picture in quotes.
- 2
Add your photos
Upload up to 10 reference photos: a face, a pet, a product or a place. Each one gets a tag like @Image1, so you can say in the prompt exactly where it goes.
- 3
Pick a style
Choose a look such as Clay, 3D, Film or Anime, or leave None. The style goes into your prompt, so you don’t have to describe it.
- 4
Get your image
Press Generate and get the picture in seconds. Then change it with a new prompt, upscale it or turn it into a video.
Try Flux 3 Klein
Write a prompt or add up to 10 reference photos, and Flux 3 Klein turns your idea into a finished image in seconds.
Why use Flux 3 Klein on Overchat AI
One account for Flux 3 Klein and every other top image and video model, with free credits every day.
Every top image model in one place
Flux 3 Image, GPT Image 2.5, Nano Banana 2.1, Seedream 5 Pro and Grok Imagine are in the same menu, on one subscription.
Compare up to 4 models at once
Run one prompt on up to four models and keep the best result.
Turn images into video
Send an image to Kling, Seedance or Veo and use it as the first frame of a video.
One-tap photo tools
Change the background, expand, erase or retouch a photo without writing a prompt.
What you can make with Flux 3 Klein
Product shots, food photos, concept art, mascots, wallpapers and portraits, each in a few seconds.
Who is Flux 3 Klein for
Flux 3 Klein suits work where you need many images fast: posts, ads, shop signs and pictures for home.
Content creators
Make covers and thumbnails with a bold, readable title.
Marketers and brands
Try many ad ideas in minutes, with the copy already in the picture.
Small businesses
Make a sign, a poster or a menu for your shop in a few minutes.
Personal projects
Turn your pet, a trip or a family joke into a print for your wall.
Flux 3 Klein vs other AI image models
How Flux 3 Klein compares with the other image models in Overchat AI: release date, blind-test scores for new images and for edits, reference photos and resolution.
Flux 3 KleinBlack Forest LabsFlux 3 ImageBlack Forest Labs
GPT Image 2.5OpenAI
Nano Banana 2.1Google
Seedream 5 ProByteDance
Qwen Image 2AlibabaExplore other image models
Other new image models in Overchat AI: Nano Banana 2.1, GPT Image 2.5, Flux 3 Image, Grok Imagine Image 2, Seedream 5 Pro and Qwen Image 2.
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
Flux 3 Klein FAQ
If you have any questions,
reach out to us at hello@overchat.ai
Flux 3 Klein, full name Flux 3 Image Klein, is a compact image model from Black Forest Labs, released on October 15, 2026. It makes new images and edits photos, takes up to 10 reference images and outputs images up to 4K.
Black Forest Labs measures a median of 4.5 seconds for a new 1-megapixel image and 7.2 seconds for an edit through its API. In our tests Klein took 6.1 seconds per image on average, against 26.5 seconds for GPT Image 2.5.
Flux 3 Image is the larger model of the family and scores higher in the Artificial Analysis blind tests: 1,117 for new images and 1,122 for edits, against 1,043 and 1,072 for Klein. Klein is several times faster, so it suits drafts, series and quick edits. Both take 10 reference photos and go up to 4K.
Yes. Black Forest Labs reports that Flux 3 Klein scores 91 Elo points higher than Flux 2 Klein 9B for new images and 70 points higher for edits, with 38% fewer parameters: 5.6 billion against 9 billion.
Its weights are open: you can download Klein from Hugging Face and run it on your own GPU. The FLUX Kommunity License allows commercial use for people and companies with less than $5 million in yearly revenue. In Overchat AI you use Klein in the browser, with nothing to install.
Yes. Put the words in quotes in your prompt, and Klein sets them into the picture. Short titles, names and signs come out clean. Check long or small text before you publish.
Up to 10 photos in one prompt. Use them to keep a face, a product or a style, or to put several things into one scene.
Up to 4K. In Overchat AI you pick 1K, 2K or 4K before you generate. Use 2K or 4K for prints, banners and wallpapers.
Yes. Open the result and send it to a video model such as Kling, Seedance or Veo in the same app. The image becomes the first frame of the clip.
On this page, in the Overchat AI web app and in the iOS and Android apps. Your images and their prompts are saved in your history on every device.
