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> **Note:** This repository is an **archived mirror** and is **not** the original upstream source.
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> The original model, weights, and documentation are developed and maintained by **Black Forest Labs**.
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> This mirror is provided for convenience and preservation purposes
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> The model weights are **unmodified**. Minor editorial changes may have been made to this README (e.g., formatting or clarification) and do **not** alter the model, its behavior, or its licensing.
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> The model is released under the **Apache License, Version 2.0**, which permits use, reproduction, modification, and redistribution, including for commercial purposes, subject to the terms of the license.
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The FLUX.2 [klein] model family
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FLUX.2 [klein] 4B is a 4
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Fully open under Apache 2.0
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**Official Announcement:**
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🔗 https://bfl.ai/blog/flux2-klein-towards-interactive-visual-intelligence
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## Official Upstream Sources
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- **FLUX.
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https://huggingface.co/black-forest-labs/FLUX.2-klein-4B
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# **Key Features**
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4. Runs on consumer GPUs (~13GB VRAM).
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5. Open weights available for commercial use under the
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https://github.com/black-forest-labs/flux2).
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Developers and creatives looking to build on top of FLUX.2 [klein] 4B are encouraged to use this as a starting point.
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## ComfyUI
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FLUX.2 [klein] 4B is also available in [ComfyUI](https://github.com/comfyanonymous/ComfyUI).
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## **Diffusers 🧨**
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> **Note:** This repository is an **archived mirror** and is **not** the original upstream source.
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> The original model, weights, and documentation are developed and maintained by **Black Forest Labs**.
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>
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> This mirror is provided solely for convenience and preservation purposes.
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> The model weights hosted here are **unmodified**. Minor editorial changes may have been made to this README (e.g., formatting or clarification) and do **not** alter the model, its behavior, or its licensing.
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>
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> The model is released under the **Apache License, Version 2.0**, which permits use, reproduction, modification, and redistribution, including for commercial purposes, subject to the terms of the license.
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The **FLUX.2 [klein]** model family represents Black Forest Labs’ fastest image models to date. FLUX.2 [klein] unifies image generation and editing within a single compact architecture, **delivering state-of-the-art quality with end-to-end inference in under one second**. It is designed for real-time and latency-critical applications and runs on consumer hardware with as little as **~13GB VRAM**.
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**FLUX.2 [klein] 4B** is a 4-billion-parameter rectified flow transformer capable of generating images from text prompts and supporting multi-reference image editing workflows.
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Fully open under **Apache License 2.0**, this model is accessible on consumer GPUs such as the RTX 3090 / 4070. Despite its compact size, it delivers strong performance across text-to-image and image-editing tasks, making it well suited for local development, edge deployment, and production use.
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**Official Announcement:**
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🔗 https://bfl.ai/blog/flux2-klein-towards-interactive-visual-intelligence
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## Official Upstream Sources
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- **FLUX.2-klein-4B — black-forest-labs (original Hugging Face model)**
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https://huggingface.co/black-forest-labs/FLUX.2-klein-4B
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## **Key Features**
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1. Black Forest Labs’ fastest distilled model for sub-second image generation.
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2. Optimized for interactive workflows, production deployments, and latency-critical applications.
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3. Unified support for text-to-image and image-to-image multi-reference editing.
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4. Runs on consumer GPUs (~13GB VRAM).
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5. Open weights available for commercial use under the **Apache License 2.0**.
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## **Usage**
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A full reference implementation of **FLUX.2 [klein]**, including sampling and inference code, is available in the official GitHub repository:
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https://github.com/black-forest-labs/flux2
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Developers and creatives building on top of **FLUX.2 [klein] 4B** are encouraged to rely on the upstream repository for implementation details and updates.
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## **ComfyUI**
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**FLUX.2 [klein] 4B** is also available in [ComfyUI](https://github.com/comfyanonymous/ComfyUI) for local inference using a node-based workflow.
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## **Diffusers 🧨**
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