FLUX.2 Klein 4B
Black Forest Labs
Sub-second image generation on consumer GPUs. Unified text-to-image and image editing in one checkpoint. Apache 2.0 licensed for commercial use. Best open fast image model.
Image Generation Local Latest FLUX Family v2
Type
Image
generation
Source
Local
local
Input Price
-
per 1M tokens
License
Apache 2.0
license
FLUX Family 7 models
The full FLUX line by generation — pricing and capabilities vary across the family.
FLUX.2
FLUX.2 Klein 4B Current Latest
Fast image generation, production deployment, edge use
FLUX.2 Klein 9B
High-quality image generation, creative workflows
FLUX.2 Dev 32B
High-quality image generation, multi-reference editing
Local Model Specs
Architecture
Rectified Flow Transformer
Runtime
ComfyUI / diffusers
VRAM Usage
13 GB
Disk Size
8 GB
Details
- Release Date
- January 15, 2026
- Knowledge Cutoff
- -
- Source
- Local
- License
- Apache 2.0
- Model ID
- flux2-klein-4b
Last updated: March 13, 2026