FLUX.2 KLEIN · 4B / 9B
Turn a few words into your next image. Create from text or refine a reference with Flux 2 Klein 4B and 9B.
Prepare your prompt here. Sign in to generate in the workspace.
A little inspiration
Explore a visual direction, then make it your own. These prompt ideas are starting points for your next image.
Prompt idea
A reflective chrome head with sculpted spikes, clear blue sky, soft clouds, dramatic side lighting, close-up portrait.
Prompt idea
A hummingbird in flight, vivid magenta and teal watercolor, expressive brushstrokes, splashes of color, warm ivory paper.
Prompt idea
A floating pink torus made of tiny particles around a glowing orange center, playful 3D art, soft studio light, pale blue background.
Prompt idea
A tall glass of sparkling amber citrus drink, bubbles rising through the liquid, dramatic backlighting, neutral studio background, product photography.
The essentials
Flux 2 Klein is an image generation and editing model family developed by Black Forest Labs. This independent website brings its 4B and 9B variants to a browser workspace, where you can create an image from text or use a reference image to guide an edit.
Model inference benchmarks are not a delivery-time promise. Queue length, image size and the selected model affect how long a request takes.
From idea to image
Start with the subject, then add the setting, lighting and visual style. Use a prompt idea above if you need a starting point. Upload a reference when you want to edit an existing image.
Pick 4B for lower-credit exploration or 9B for a higher-detail direction. Set the aspect ratio to suit your layout, then continue to the workspace to review the settings and credit cost.
Sign in and submit the request from the workspace. Review the result, adjust one part of your prompt at a time, and download the image you want to keep.
A canvas for your ideas
Find the right light for your product.
Explore backgrounds, surfaces and lighting before committing to a campaign direction. Describe the materials and camera angle, or bring a reference image when the product's appearance matters.
Useful for product concepts, campaign moodboards and social visuals. Check logos, labels and fine details before publishing.
Give a rough idea a visual direction.
Try watercolor, sculptural forms or a more cinematic look from the same starting idea. Change the palette, composition or medium to explore alternatives without rebuilding a scene from scratch.
Useful for editorial illustrations, character concepts and early creative studies. Be specific about what should stay consistent between iterations.
Choose your starting point
The two variants share a text-and-image workflow. Choose based on your credit budget and the kind of detail you want to explore.
| Task | FLUX.2 Klein 4B | FLUX.2 Klein 9B |
|---|---|---|
| Text to image | 2 credits | 4 credits |
| Image editing | 4 credits | 6 credits |
| A useful starting point for | Exploring ideas at a lower credit cost | Developing detail and visual complexity |
| Start with 4B | Start with 9B |
Costs shown are per generation. Review the workspace total before submitting, especially when adding reference images.
Compare the available credit packages and current prices. Your model and generation mode determine the credits used for each request.
Before you start
A few practical details about using Flux 2 Klein here.
You can write a prompt, select a model and choose an aspect ratio on this page. Generation takes place in the workspace and requires sign-in and sufficient credits. Check the workspace for the current balance and any available offers.
4B uses fewer credits and is a useful starting point for trying ideas. 9B is the larger variant for exploring more detailed results. Text-to-image requests cost 2 credits with 4B or 4 credits with 9B; editing costs 4 or 6 credits respectively.
Yes. Add a reference image to the composer and describe the change you want. Your prompt and image are carried into the workspace. State both what should change and what should stay the same; results still need review.
Not necessarily. Black Forest Labs describes sub-second model inference under specific conditions. A hosted request also includes queueing, processing and delivery, so actual waiting time varies. The workspace shows the request status.
Usage depends on the selected model's license, the service terms and rights in your inputs. The 4B model is released under Apache 2.0; 9B uses different license terms. Review the applicable terms before commercial use, and check outputs for protected content.
No. flux2klein.ai is an independently operated service that provides access to the Flux 2 Klein model family. It is not affiliated with, endorsed by or sponsored by Black Forest Labs.
Keep exploring
Your next image starts here
Start with a subject, a little light and a direction worth exploring.
