Stable Diffusion

An open-source AI image generation model creating images from text descriptions, notable for being freely available and runnable on personal computers rather than requiring cloud services. Unlike proprietary models (Midjourney, DALL-E), Stable Diffusion's open-source nature enables customisation, local running without API costs, and modification for specific use cases. The model uses diffusion techniques to progressively refine random noise into coherent images matching prompts. Interfaces such as ComfyUI and Forge make Stable Diffusion accessible on your own machine, and Stability AI's own web platform is there if you would rather not install anything. The open-source ecosystem has spawned countless variations, plugins, and specialised versions optimised for specific image types or styles.

Why it matters

Stable Diffusion's open-source nature provides unlimited image generation without recurring costs or content restrictions. Running locally offers privacy and customisation impossible with cloud-based services, though requiring more technical knowledge.