Not exactly the same. Guaranteed minimum incomes are conditional: as you make more money, they phase out. This makes them significantly cheaper than basic incomes, which you get regardless of how much money you make. The former makes more sense on the face of it, but it exposes workers to very steep marginal tax rates when they're trying to move from the underclass to the middle class. Trap enough people in the underclass, and the apparent cheapness of the guaranteed minimum income no longer looks so cheap.
Charles Eisenstein makes the case for it in chapter 14 of Sacred Economics: http://sacred-economics.com/sacred-economics-chapter-14-the-...