black-forest-labs /FLUX-2-klein-9b
5.25 DZD× (width / 1024) × (height / 1024)
The best quality-to-latency ratio, production apps model of the Flux 2 family. Frontier visual intelligence — state-of-the-art image generation and editing from Black Forest Labs
Public
ArchitectureDense
Context WindowImage
FLUX.2 [klein] is our fastest model family — generating and editing (multiple) images in under a second without sacrificing quality. Built for real-time applications, creative iteration, and deployment on consumer hardware.
Key Capabilities
- Sub-second inference — Generate or edit images under a second on modern hardware
- Unified generation & editing — Text-to-image, image editing, and multi-reference in one model
- Runs on consumer GPUs — Klein 4B fits in ~8GB VRAM (RTX 3090/4070 and up)
- Apache 2.0 on 4B — Open-source, fine-tuning, and customization
The Klein Family
| Model | Best For |
|---|---|
| [klein] 4B | Maximum speed |
| [klein] 9B | Best quality-to-latency ratio, production apps |
Licensing: 4B models are Apache 2.0. 9B models use the FLUX.2-dev Non-Commercial License.
Text-to-Image Examples
Output Diversity
Editing Examples
