Technically GMI, but we've always conflated the two. The study Ontario tired to conduct a few years ago, which was oft-referred to as a UBI study, was also GMI, not UBI, if you look at the implementation details. There are subtle differences, to be sure, but they probably don't make much difference in practice. The conflation isn't the result of them being radically different.

Further, when you have unskilled people doing the work, as we do, it is likely they would be unaware of the difference. So what differences do exist, even where impactful, are ultimately immaterial in any practical sense. Call it UBI, GMI, GBI, MBI, or the many other names thrown out there, and you'll get the same response every time: "You what? Oh, you want to give people money? Okay. Umm. I don't know what that entails, but I'll think of something!"