Nvidia · bfl.ai
FLUX 3 Image Klein is the second open weights release from the FLUX 3 family, following FLUX 3 Action
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Key facts
- FLUX 3 Image Klein is the second open weights release from the FLUX 3 family, following FLUX 3 Action
- With the distilled model and the INT8 build, it generates a 1MP image in about 4 seconds on an NVIDIA GeForce RTX 5090 and under 9 seconds on an RTX 4070 through ComfyUI
- Through the BFL API, it delivers lower latency than Qwen-Image 2.1, FLUX.2 [pro], Ideogram V4.5 and Krea 2, and the highest rating at its latency
- Compared with FLUX.2 [klein] 9B, it gains 91 Elo in text-to-image and 70 in image editing, with 38% fewer parameters
Summary
6B parameter open weights model for text-to-image generation, image editing and multi-reference generation with up to 10 reference images. FLUX 3 Image Klein builds on FLUX 3's shared learnings across images, video and audio. The release includes a base model for fine-tuning and a step distilled model for low-latency generation, along with FP8, INT8 and NVFP4 builds developed with NVIDIA support, under the FLUX Kommunity License. In internal evaluations, FLUX 3 Image Klein ranks first in text-to-image, multi-reference generation and image editing, ahead of larger open weights models. FLUX 3 Image Klein was also optimized for consumer GPUs. With the distilled model and the INT8 build, it generates a 1MP image in about 4 seconds on an NVIDIA GeForce RTX 5090 and under 9 seconds on an RTX 4070 through ComfyUI.