FLUX 3 Image Klein adds 4K image editing on 8GB GPUs

Black Forest Labs has released FLUX 3 Image Klein, a 5.6B-parameter open-weights model for text-to-image generation, image editing and multi-reference generation with up to 10 reference images.

It supports native 4K output, pixel-perfect editing and bounding boxes for controlling element placement or restricting edits to a selected area.

The release includes base and step-distilled checkpoints plus FP8, INT8 and NVFP4 builds, with the INT8 version able to run on NVIDIA GeForce RTX GPUs with 8GB of VRAM through ComfyUI or Diffusers.