Omniinfer's Stable Diffusion API is an AI-powered image generation service that allows developers to generate high-quality images quickly and affordably. The service supports various needs, from life-like images to artistic creations, using a wide range of models. With Omniinfer, users can add their own models and avoid the need for GPUs, benefiting from a pay-as-you-go pricing model with discounts for high-volume usage.