FLUX 3 Image Klein Base

FLUX 3 Image Klein Base is the full undistilled checkpoint of Black Forest Labs' open-weights FLUX 3 image model, covering text-to-image generation and reference-based editing. It keeps the complete model capacity, which makes it the variant to fine-tune, customize, and optimize. It suits research, post-training work, and workflows that favor control over generation speed.

API Reference
INTEGRATE
Complete technical specification for integration
RequestResponse
Examples4
CODE
Ready-to-use code snippets for common workflows
Guides1
LEARN
Step-by-step tutorials for advanced use cases