ModelCards

FLUX 3 Image Klein

Image modelOpen weightsCard summarized

Leading open weights quality with fewer parameters.

Source: FLUX 3 Image Klein model card (Hugging Face) and launch post

Use it via API

$0.009 / image
Code exampleCompare

Where to call it

  • BFL APIflux-3-image-klein
  • Self-host (weights)black-forest-labs/flux-3-image-klein

Supports

  • Image input
Full feature support

Good for

  • Text-to-image, single-image editing and multi-reference composition in one model
  • Bounding-box layout control on a 0–1000 grid
  • Local deployment on consumer GPUs

Watch out for

Overview

Black Forest Labs · 02Klein, front

FLUX 3 Klein

Leading open weights quality with fewer parameters.

Typical price
$0.009 / image
1K (about 1 MP)
Max resolution
4K
Aspect ratios
15 options
Modes
text-to-image, image editing
Released
15 Oct 2026

FLUX 3 Image Klein is a 5.6B-parameter open-weights version of FLUX 3 Image for text-to-image, image editing and multi-reference generation with up to 10 reference images. It keeps FLUX 3 Image's native 4K output and bounding-box control, and ships as a 16-step distilled model (also served on the BFL API) and a 50-step Base model for fine-tuning. Model card; launch post (15 Oct 2026); docs

flux-3-image-klein
Typical price
$0.009 / image
Max resolution
4K (up to 16.8 MP; width/height 64–6256 px)
Aspect ratios
21:9, 2:1, 16:9, 3:2, 7:5, 4:3, 5:4, 1:1, 4:5, 3:4, 5:7, 2:3, 9:16, 1:2, 9:21
Weights
Open · FLUX Kommunity License v1.0
Released
15 Oct 2026
  • text-to-image
  • image editing
  • multiple reference images (up to 10)
  • bounding-box layout control
  • LoRA fine-tuning (Base weights)