FLUX.2 Klein

Flux 2 Klein (FLUX.2 [klein]) is a cutting-edge AI image generation model developed by Black Forest Labs. It delivers sub-second image generation speeds, making it the fastest in the FLUX family. Built on advanced rectified flow transformer architecture with 4 billion parameters, it offers both text-to-image and image-to-image capabilities. Released under the permissive Apache 2.0 license, it's fully commercial-friendly, allowing creators to use generated images for any purpose. The platform supports multiple aspect ratios and high-resolution outputs. New users receive 5 free images (10 credits) to start creating immediately without a credit card.