flux.1-pro

FLUX.1 Model Suite by Black Forest Labs

Overview

FLUX.1 is a 12-billion parameter rectified flow transformer model suite developed by Black Forest Labs, released in August 2024. Utilizing latent adversarial diffusion distillation, FLUX.1 achieves high-quality image generation in just 1 to 4 inference steps, making it one of the fastest image generation models available. :contentReference[oaicite:7]{index=7}:contentReference[oaicite:8]{index=8}

Model Variants

• FLUX.1 [schnell]: Ultra-fast, lightweight model designed for local development and personal use. Open weights available on Hugging Face and integrated with ComfyUI. :contentReference[oaicite:9]{index=9}
• FLUX.1 [dev]: Open-weight, non-commercial variant optimized for efficiency, matching pro-level image quality. Available on Hugging Face and Replicate. :contentReference[oaicite:10]{index=10}
• FLUX.1 [pro]: Highest quality variant, available via API and free on Replicate, optimized for production use. :contentReference[oaicite:11]{index=11}

Features

• Fast image generation in 1-4 inference steps
• Advanced rectified flow transformer architecture
• Open-source with Apache 2.0 license
• Optimized for CPU and GPU

Use Cases

• Rapid prototyping and visualization
• Content creation for marketing and social media
• Educational and illustrative material generation
• Fast personal and hobbyist image generation

Limitations

• May trade some image detail for faster generation speed
• Optimal performance requires modern hardware (GPU recommended)

Performance Comparison