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Black Forest Labs releases FLUX 3 Image Klein, optimized for NVIDIA GPUs

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Black Forest Labs says FLUX 3 Image Klein was trained on NVIDIA GB200 NVL72 and optimized with NVIDIA. It reports about 0.55 seconds per image on NVIDIA GB300 using NVFP4, and about 4 seconds on an NVIDIA GeForce RTX 5090 using INT8. The post says it runs on RTX GPUs and laptops with 8 GB VRAM.

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The post gives per-GPU generation times and VRAM requirements, letting readers judge whether the model fits their local hardware and workflow.

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Part of a thread · earlier post

FLUX 3 Image Klein trained on NVIDIA GB200 NVL72 and optimized with @NVIDIAAI:

  • 0.55s per image on NVIDIA GB300 (NVFP4)
  • ~4s on NVIDIA GeForce RTX 5090 (INT8)
  • Runs on RTX GPUs and laptops with 8 GB VRAM

Source: Black Forest Labs · x.comPublished · added here