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Black Forest Labs releases FLUX.3 Image Klein open weights, quantized builds and API

6 articles4 sourcessince Oct 15Last article 1h ago ·

Overview

AISummary of 6 articles

Black Forest Labs releases FLUX.3 Image Klein as open weights on Hugging Face on October 15, 2026, in a base checkpoint for fine-tuning, further training and research, and a distilled version.

The company also releases FP8, NVFP4 and INT8 quantized versions, which it says run on GPUs and laptops with 8 GB of VRAM. The distilled model is offered through the BFL API with native 4K output, bounding boxes and pixel-perfect editing.

SGLang and vLLM-Omni announce day-0 support. SGLang says the 5.6B-parameter model accepts up to 10 reference images per generation and is distilled to 16 steps, in BF16, FP8 and NVFP4 variants. vLLM-Omni, developed with Black Forest Labs and NVIDIA, supports BF16, FP8 and NVFP4 checkpoints and provides a Docker image tagged flux-3-image-klein.

Written by AI from the articles below · updated Oct 15, 1:30 PM ET

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Developments

5 developments

  1. Oct 15, 11:27 AM ET · 1 article
    vLLM-Omni adds day-0 serving support for FLUX 3 Image Klein
    vLLM: vLLM-Omni adds day-0 support for FLUX 3 Image Klein
  2. Oct 15, 11:25 AM ET · 1 article
    SGLang publishes a cookbook for serving FLUX.3 image diffusion
    SGLang: SGLang publishes a cookbook guide for FLUX.3 diffusion models
  3. Oct 15, 11:24 AM ET · 1 article
    SGLang adds Day-0 support for FLUX 3 Image Klein from Black Forest Labs
    SGLang: SGLang adds Day-0 support for FLUX 3 Image Klein image model
  4. Oct 15, 11:14 AM ET · 2 articles
    Black Forest Labs releases FLUX 3 Image Klein weights
    Black Forest Labs: Black Forest Labs releases FLUX.3 Image Klein weights on Hugging Face
  5. Oct 15, 11:14 AM ET · 1 article
    Black Forest Labs launches open-weight image models and quantized versions
    Black Forest Labs: Black Forest Labs releases open weights, quantized versions, and an API for its image model

Article timeline

The articles in this story. Times are ET.

Oct 15
  1. Stable Diffusion TutorialsX
    Black Forest Labs releases open weights for Flux 3 Image Klein

    AIBlack Forest Labs has released open weights for Flux 3 Image Klein, a 5.6B-parameter model, according to a post from Stable Diffusion Tutorials. The model supports text-to-image generation and image editing, supports finetuning, and comes in two variants, Klein and Klein base, with Bf16, NVFP4 and FP8 formats. The weights are linked on Hugging Face.

    Image from @SD_Tutorial's post
  2. vLLMOfficial
    vLLM-Omni adds day-0 support for FLUX 3 Image Klein

    AIvLLM-Omni now supports FLUX 3 Image Klein image generation from the day of its release, developed with Black Forest Labs and NVIDIA. The integration supports BF16, FP8 and NVFP4 checkpoint formats, with custom kernels optimizing the transformer and text encoder. A Docker image tagged flux-3-image-klein and a deployment recipe are available.

    Video from @vllm_project's post
  3. SGLangOfficial
    SGLang publishes a cookbook guide for FLUX.3 diffusion models

    AISGLang shares a cookbook link for running FLUX.3 with its diffusion serving framework. The post gives no further details on the guide's contents, setup steps, or performance figures.

  4. SGLangOfficial
    SGLang adds Day-0 support for FLUX 3 Image Klein image model

    AISGLang has Day-0 support for FLUX 3 Image Klein from Black Forest Labs, a 5.6B-parameter image model for text-to-image, editing, and multi-reference generation. The model accepts up to 10 reference images per generation and bounding-box layout control, and it is distilled to 16 steps with BF16, FP8, and NVFP4 variants.

    Image from @sgl_project's post
  5. Black Forest LabsOfficial
    Black Forest Labs releases FLUX.3 Image Klein weights on Hugging Face

    AIBlack Forest Labs says the FLUX.3 Image Klein weights are available for download on Hugging Face. The post links to a model page and a blog post for further details.

  6. Black Forest LabsOfficialPick
    Black Forest Labs releases open weights, quantized versions, and an API for its image model

    AIBlack Forest Labs announces base and distilled open weights for its image model. It also releases FP8, NVFP4, and INT8 quantized versions that run on GPUs and laptops with 8 GB of VRAM. The distilled model is available through the BFL API with native 4K output, bounding boxes, and pixel-perfect editing. The company also lists launch support for AI Toolkit, ComfyUI, Diffusers, SGLang Diffusion, vLLM-Omni, and Nvidia fine-tuning recipes.

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