An AI portfolio builder takes your work, your resume, and a short description of what you do, and produces a finished portfolio website: the layout, the galleries, the case-study pages, the copy, and the contact form, without you picking a template or writing code.
The difference from a template-based portfolio maker is where it starts. A template asks you to fit your work into someone else's layout. Puter AI Builder starts from your description and your files and designs around them, then lets you refine the result by asking for changes or clicking the part you want different. The output is a normal website you own.