Stable Diffusion is the foundational open-source image generation model that democratised AI art by making high-quality image synthesis available to anyone with a consumer GPU. Its open weights have spawned a massive ecosystem of fine-tuned models, ControlNet extensions, and community tools distributed through platforms like Civitai. Whether run locally via Automatic1111 or ComfyUI, or accessed through cloud APIs, Stable Diffusion remains the backbone of countless AI creative workflows.