Generative AI applications in text, image, audio, and video have seen a surge in popularity.Diffusion models, introduced in 2015, are core mechanisms in models like DALLE and CLIP.Diffusion models are essential for content generation and understanding advanced variants.Forward diffusion involves gradually adding noise, similar to mixing liquids in a glass.Reverse diffusion, like reconstructing a noisy image, is more challenging.Diffusion models iterate noise addition to transform images into unrecognizable states.Training neural networks on image pairs from diffusion steps aids in image reconstruction.The number of iterations and neural network architecture impact diffusion model design.Using a shared network across iterations can enhance training efficiency in diffusion models.Stable diffusion models and integrating text input are advancing image generation.