FLUX 3 Image Klein

Black Forest Labs' first open FLUX 3 image model: a 5.6B-parameter transformer for text-to-image, image editing and multi-reference generation with up to 10 reference images, plus bounding-box layout control. Uses Qwen3-VL-4B-Instruct as its text encoder and expects full scene captions, so BFL pairs it with a 9B prompt upsampler (or any LLM). The distilled checkpoint samples in 16 steps without guidance. BFL ships BF16, FP8, NVFP4 and, for ComfyUI, int8 builds; ComfyUI supports it natively from v0.41.0. FLUX Kommunity License: non-commercial use, with commercial outputs allowed for users under US$5M annual revenue.