Black Forest Labs' FLUX.3 Image Klein is now available in Hugging Face's Diffusers library as an open image generation model. The distilled checkpoint generates a 1024 × 1024 image in roughly two seconds on an H100. The single model supports text-to-image, multi-reference image-to-image, and bounding-box layout control. It uses a Qwen3-VL text encoder, ships as a Modular Diffusers pipeline, offers NVFP4 and FP8 weights for smaller GPUs, and includes LoRA training scripts.
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