Overview
FLUX 3 Image Klein is black-forest-labs’s 5.6B-parameter open-weights image model (October 2026) for text-to-image, editing, and multi-reference generation on consumer GPUs.
Key Points
- Distilled variant: 16 steps, CFG 1; base variant: 50 steps, CFG 3.5 for fine-tuning/LoRA
- Resolutions from 768² through native 4K; API endpoint
flux-3-image-klein - Hugging Face + Diffusers + ComfyUI day-one; INT8 from ~8GB VRAM per BFL docs