Black Forest Labs releases FLUX 3 Image Klein, a 5.6B open-weights image model

What happened

FLUX 3 Image Klein has 5.6 billion parameters. It handles text-to-image generation and editing, and accepts up to 10 reference images.

It supports native 4K output. Bounding boxes can be used to place elements or to confine an edit to one area of the image.

BFL says an INT8 build runs on GeForce RTX GPUs with as little as 8 GB of VRAM, which puts it within reach of consumer graphics cards.

The model ships under the FLUX Kommunity License, which allows free commercial use below $5 million in annual revenue.

VentureBeat reports API pricing from $0.009 per 1K-resolution image.

Quality claims come from BFL's internal evaluations.

Why it matters for creators

A capable image model that runs on consumer GPUs gives small creators a local option, with licence limits above $5 million in revenue.

Running locally means generations stay on the creator's own machine. Multiple reference images and bounding-box control help keep characters or products consistent across a set of images, and native 4K covers high-resolution work.

Businesses above the $5 million revenue line need to check the licence terms before using the open weights commercially. Since BFL's quality claims are internal, it is worth testing the model against current tools before switching.