FLUX 3 Image Klein
#9 in Text-to-BildBlack Forest Labs · v3 · image klein · siet 15. Oktober 2026 · 4× · tolest 18. Okt. 2026
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Momentum
FLUX 3 Image Klein is a compact open-weights model from Black Forest Labs with 5.6B parameters for text-to-image generation, image editing and multi-reference generation (up to 10 reference images). It is available as an undistilled Base variant and a distilled variant, plus FP8, NVFP4 and INT8 quantizations. API use is paid; the weights fall under the FLUX Kommunity License.
Momentum-Verloop
20.07.18.10.
Features
| Fine-Tuning | Base checkpoint (50 steps) for fine-tuning and LoRA training, e.g. with AI Toolkit or Diffusers |
| Generation Time | Local (NVIDIA-measured, 16 steps, INT8, 1MP): ~4 s on RTX 5090, <9 s on RTX 4070; API median 4.54 s (text-to-image, 1MP) |
| License | FLUX Kommunity License; free commercial use for annual revenue under $5M |
| Max Resolution | Native up to 4K (768 to 4K) |
| Platform | Open weights (Hugging Face, ComfyUI, Diffusers, AI Toolkit, SGLang, vLLM-Omni) and BFL API |
| Price | API from $0.008/image (768×768); 1K $0.009; 2K $0.014; 4K $0.036 |
| Release Date | October 15, 2026 |