# FLUX 3 Image Klein FAQ

## What is FLUX 3 Image Klein?

FLUX 3 Image Klein is a 5.6B-parameter open-weight image model released by Black Forest Labs on October 15, 2026. One model handles both text-to-image generation and image editing. This site hosts the distilled version, tuned to generate in 16 steps, on its servers; you use it through your browser.

## How many reference images can I use?

Up to three per generation. Refer to them in the prompt as <ref_image_1>, <ref_image_2>, and <ref_image_3> and say where each one belongs.

## What resolution and aspect ratios are supported?

You can choose 1K or 2K output and one of fifteen aspect ratios, from 1:1 to 21:9. Output formats are JPEG, PNG, and WebP.

## Can I try it before paying?

Yes. New accounts get free credits after signing in, enough for a few prompts. After that you can pick a plan or credit pack on the pricing page.

## Can I use the images commercially?

Images you generate here can be used under the site Terms of Service and your plan. The FLUX Kommunity License covers running the open weights yourself and is a separate matter.

## Can I download the model weights or run it locally?

Not from this site. Black Forest Labs publishes the weights on Hugging Face. This site is for people who want to use the model without installing anything.

Source: https://flux3imageklein.net