Black Forest Labs ships FLUX.3 Image Klein for ComfyUI

Black Forest Labs has released FLUX.3 Image Klein, a new open model that handles both text-to-image generation and image editing. The release lands on Hugging Face in a form packaged specifically for ComfyUI, the node-based interface that has become a default workbench for open image models.

The "Klein" naming follows the lab's convention of shipping smaller, more accessible variants alongside its flagship models, suggesting this build is aimed at creators who want to run it locally rather than lean on a hosted API. By leading with a ComfyUI distribution, Black Forest Labs is meeting its core audience where they already work.

What it does

• Generates images from text prompts
• Edits existing images, with editing listed as the primary mode
• Ships ready to drop into ComfyUI workflows

Why it matters

Black Forest Labs has been one of the most closely watched players in open image generation since the original FLUX family, and a combined generation-and-editing model lowers the friction of stitching together separate tools. The model is distributed under a custom license, so teams planning commercial use should read the terms on the model page before building on it.