Stable Diffusion

Stable Diffusion is the open-weights image generation family from Stability AI. Because the weights are downloadable, you can run it locally, fine-tune it on your own style, and build it into products without per-image API fees.

The ecosystem is unmatched: ComfyUI and AUTOMATIC1111 front-ends, thousands of community checkpoints and LoRAs, ControlNet for pose and composition control, and licenses suitable for commercial use at most scales.

It demands more setup than hosted tools, but in exchange you get total control, privacy, and zero marginal cost. For developers and power users, it remains the foundation of open image AI.