Black Forest Labs releases open-weights FLUX 3 Image Klein with 5.6B parameters

Black Forest Labs released FLUX 3 Image Klein on October 15, 2026, a 5.6B-parameter open-weights model for text-to-image generation and editing with up to 10 reference images and native 4K. The INT8 build runs on GeForce RTX GPUs with as little as 8 GB of VRAM, and API pricing starts at $0.009 per 1K image.

• 5.6B parameters, up to 10 reference images and native 4K generation
• INT8 build runs on RTX GPUs with 8 GB VRAM via ComfyUI or Diffusers
• Distilled model generates a 1MP image in about 4 seconds on RTX 5090
• FLUX Kommunity License allows free commercial use under $5M annual revenue