Stability AI
Stability AI released Stable Diffusion in August 2022 and made the model weights publicly available — a decision that democratised image generation and triggered a wave of copyright litigation. Its founder Emad Mostaque resigned in March 2024 after governance disputes. The company has faced ongoing financial difficulties, lawsuits from Getty Images and a class of artists alleging training data copyright infringement, and leadership instability. Despite these problems, Stable Diffusion remains the most widely deployed open-weight image generation model and a reference point for debates about training data rights, synthetic media, and AI-generated content regulation.
AI Models
Stable Diffusion XL
Released in July 2023, Stable Diffusion XL (SDXL) is a two-stage image generation model with a 3.5B parameter base model and 6.6B parameter refiner. It produces significantly higher quality and more coherent images than SD 1.5 or 2.1. SDXL weights are publicly available and it is the most widely deployed open-weight image generation model. Its training data (LAION-5B) is the subject of ongoing copyright litigation. SDXL demonstrates both the democratising potential of open image generation models and the unresolved legal questions about training data rights.