flux-2-klein-base-4b-mflux-bf16

Flux.2 Klein Base 4B · MFlux BF16

This is a BF16 MFlux version of FLUX.2-klein-base-4B.

MFlux runs the latest state-of-the-art generative image models locally on your Mac in native MLX. MFlux is open source and free.

[!NOTE] Community conversion by MFlux-Community -- not an official release from the original model's authors. The original model's license applies unchanged, see License.

MFlux versions of FLUX.2-klein-base-4B

Converted on 2026-08-21.

BF16 is the full-precision MLX build -- no quantization. Use it as the highest-fidelity reference, or pass --quantize to quantize on the fly.

Usage

Install MFlux

uv tool install --upgrade mflux

Edit an image using FLUX.2-klein-base-4B BF16:

mflux-generate-flux2 \
  --model mflux-community/flux-2-klein-base-4b-mflux-bf16 \
  --base-model flux2-klein-base-4b \
  --prompt "A puffin standing on a cliff" \
  --width 1024 \
  --height 1024 \
  --seed 42 \
  --output image.png

The weights are downloaded from this repo on first use. To keep a local copy instead:

hf download mflux-community/flux-2-klein-base-4b-mflux-bf16 --local-dir ./flux-2-klein-base-4b-mflux-bf16

then pass --model ./flux-2-klein-base-4b-mflux-bf16.

License

This repo inherits the license of the original model: apache-2.0. See the original model card for the full terms and any usage restrictions. The weights here were modified from the original release only by conversion to MLX.

Credits

• Original model: black-forest-labs/FLUX.2-klein-base-4B
• MLX implementation: MFlux by Filip Strand and contributors
• Conversion: MFlux-Community