The models that are being put under the "Pelican" testing don't use a GUI to create SVGs (either via "tools" or anything else), they're all Text Generation models so they exclusively use text for creating the graphics.

There are 31 posts listed under "pelican-riding-a-bicycle" in case you wanna inspect the methodology even closer: https://simonwillison.net/tags/pelican-riding-a-bicycle/