Images / Black Forest Labs

FLUX.2 Klein · 4B

A compact open image model for local generation and image editing, with official ComfyUI templates and downloadable weights.

Verified sourceReleased Jan 15, 2026Source checked 9/23/2026
LOCALRENTED GPUOPEN WEIGHTS

At a glance

Parameters
4B
License
Apache 2.0
Software
ComfyUI, Diffusers
View the model source
MY HARDWARE

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Best for

  • Generate images from a local prompt.
  • Edit images with a reference image using the official ComfyUI template.

Tradeoffs

  • The diffusion file alone is not the full memory footprint; the text encoder and VAE also need memory.

Ways to run it

ComfyUI · Windows, macOS, Linux

Official text-to-image and image-editing templates include specific diffusion, text encoder, and VAE files.

Official instructions

Diffusers · Python

pip install -U diffusers transformers accelerate
Official instructions

Explore its uses

IMAGE GENERATIONIMAGE EDITINGCOMFYUI

Get it running

Generate images on your own GPU

Use the official FLUX.2 Klein 4B ComfyUI template with exact model files, a first prompt, and an output check.

View workflow

Edit images locally with an open model

Use the official FLUX.2 Klein 4B ComfyUI image-editing template to transform an input image while keeping source files on your machine.

View workflow

Keep exploring

FLUX.2 Klein · 4B: hardware, VRAM & setup | YouRunAI