Stable Diffusion 3.5 Medium is a text-to-image generation model developed by Stability AI, featuring improved image quality, typography, understanding of complex prompts, and resource efficiency. The model employs three fixed pre-trained text encoders, enhances training stability using QK normalization, and incorporates dual attention blocks in the first 12 transformer layers. It excels in multi-resolution image generation, consistency, and adaptability across various text-to-image tasks.