There are still no rules for playing a Free Spirit in SR5, yet. Data Trails gave us rules for AIs, but they're kind of convoluted and awkward, IMO. Howling Shadows finally gave us Drakes, but they're expensive.
There ought to be a neat set of rules for playing Free Spirits, Free Sprites, and Artificial Intelligences that are clear, logical, consistent, and equivalent, but they don't exist yet and I haven't figured out an elegant way to tie them together myself. If I crack that nut, I'll let you know.