What is 3D mesh in 3D modeling AI tools?

In 3D modeling AI tools, a 3D mesh is a digital structure of connected vertices, edges, and faces that forms a 3D object’s basic shape. It acts as the "surface skeleton"—defining an object’s geometry so models have physical form. AI uses meshes to automate tasks like converting 2D images/scans to 3D, reducing polygon count for better performance, or fixing gaps in rough models. Try uploading a 2D photo to see AI generate a mesh, or use mesh optimization to make detailed models lighter for games/AR.