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FLUX.2 Klein

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3.88B · BaseImages

FLUX.2 klein base 4B

FLUX.2 klein base 4B is an Apache-2.0 licensed image-to-image model from black-forest-labs. It is a 4 billion parameter rectified flow transformer that unifies image generation and editing in a single compact architecture and supports multi-reference editing. It is an undistilled, full-capacity foundation model intended for flexibility, fine-tuning, LoRA training, research, and custom pipelines. The model card states it can run on consumer hardware with as little as 13GB VRAM and is available via ComfyUI and Diffusers.

Model size
3.88B
Freshness 35 out of 100. Repository age: 274 days old, Jan 14, 2026. Measures age, not quality.
Popularity 73 out of 100. 400,431 downloads in 30 days; 180 lifetime likes. Checked Oct 15, 2026. Measures adoption, not quality.
SETUP GUIDES FOR THIS VERSIONCreate images locally with FLUX.2 KleinEdit images locally with FLUX.2 Klein
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4BImages

FLUX.2 Klein · 4B

FLUX.2 klein 4B is a 4 billion parameter rectified flow transformer model from black-forest-labs, licensed under Apache 2.0. It is an image-to-image pipeline and also supports text-to-image and multi-reference editing. The model card describes it as the fastest image model in the FLUX.2 family, unifying generation and editing in a single compact architecture, with end-to-end inference in as low as under a second. It is built for interactive workflows, production deployments, and latency-critical applications, and can run on consumer GPUs with as little as 13GB VRAM. It supports English language input and is available via BFL API, ComfyUI, and Diffusers. The official model card notes limitations around factual information, text rendering accuracy, bias, prompt following, and certain out-of-scope uses.

Model size
4B
Freshness 35 out of 100. Release age: 273 days old, Jan 15, 2026. Measures age, not quality.
Popularity 76 out of 100. 423,736 downloads in 30 days; 1,043 lifetime likes. Checked Oct 15, 2026. Measures adoption, not quality.
Arena Open Source Image generation: rank 14 of 19. Ranked model: flux-2-klein-4b. Export dated Oct 7, 2026. Source checked Oct 15, 2026. Human preference ranking, not hardware suitability.+1
SETUP GUIDES FOR THIS VERSIONCreate images locally with FLUX.2 KleinEdit images locally with FLUX.2 Klein
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