Flux.1

Black Forest Labs' 12B parameter rectified flow transformer for text-to-image generation. Created by ex-Stability AI developers, released August 2024. Three variants: schnell (Apache 2.0, 1-4 steps, fast), dev (guidance distillation, efficient), pro (state-of-the-art quality). Uses Diffusion Transformer combining Transformer and CNN architectures. Supports resolutions: 1024x1024, 768x1344, 1344x768, 1216x832. Schnell variant generates high-quality images in only 1-4 steps using latent adversarial diffusion distillation. Enables commercial use (schnell/pro), dev for non-commercial.