While the download is free, the software does have guardrails:
In the rapidly evolving world of 3D architectural visualization, speed and creativity are everything. The emergence of artificial intelligence has revolutionized how we turn basic 3D models into photorealistic presentations. (now often referred to as AI Render in later versions) is Trimble’s premier generative AI plugin, designed to bridge the gap between initial sketching and final rendering. sketchup diffusion plugin free download