Black Forest Labs · FLUX 3

Image Klein

Prepare a text-to-image or reference-image edit request for the official FLUX 3 Image Klein model. The model uses a prompt upsampler and supports up to 10 reference images.

Model card ComfyUI weights Official code

This account currently cannot host a GPU Space, and the model has no Inference Provider endpoint. This page is a working request builder; run the copied payload in ComfyUI after installing the official weights.

Request builder

Prompt or edit instructionReference image (optional)

Choose an image for image editing or drag it here

Mode

Checkpoint

Width

Height

Request payload

Your prepared request will appear here.

Model facts

5.6Bimage transformer parameters

Up to 4Koutput resolution

10 refsmaximum reference images

INT8recommended for RTX 30 series