Black Forest Labs 发布开源权重图像模型 FLUX 3 Image Klein
Black Forest Labs' open-weights image model FLUX 3 Image Klein runs on consumer GPUs with just 8 GB of VRAM
Black Forest Labs 发布 FLUX 3 Image Klein，这是一个 5.6B 参数的开源权重模型，支持文生图、图像编辑以及最多十张参考图生成，原生支持 4K 输出和像素级编辑。官方称其内部测试 Elo 评分在所有开源模型中最高，超过 Ideogram V4.5 和自家 FLUX.2 [pro]，比 9B 的 FLUX.2 [klein] 提升 91 Elo 且参数少 38%。INT8 版本可在仅 8 GB 显存的 NVIDIA GPU 上运行，RTX 4070 上生成一张图不到 9 秒；权重采用 FLUX Kommunity License，年营收低于 500 万美元的公司可免费商用，同时通过 BFL API、Playground、Hugging Face Spaces 以及 ComfyUI 和 Diffusers 本地使用。
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Black Forest Labs has released FLUX 3 Image Klein, a 5.6-billion-parameter open-weights model for text-to-image generation, image editing, and generation with up to ten reference images. It supports native 4K output, pixel-accurate editing, and bounding boxes for element placement. Black Forest Labs says it scores the highest Elo ratings among all open models in internal testing, beating closed competitors Ideogram V4.5 and even BFL's own FLUX.2 [pro] . It gains 91 Elo points over FLUX.2 [klein] with 38 percent fewer parameters than that model's 9 billion.
An INT8 build lets it run on NVIDIA GPUs with just 8 GB of VRAM, generating an image in under 9 seconds on an RTX 4070. The weights ship under the FLUX Kommunity License , free for commercial use by companies making under $5 million annually. The model is also available through the BFL API at $0.009 per 1,000 images, as a Playground , on Hugging Face Spaces , and locally via ComfyUI and Diffusers . LoRA training works from day one through Ostris AI Toolkit and NVIDIA NeMo AutoModel .