This answer seems to treat inflation as "the cost of everything". If, rather, we focus only on the items that are needed to survive (food, shelter, etc), I think the answer changes.
The taxes to pay for the UBI will generally come from the middle and higher income households; who are already spending the money they need to on those items. Losing some of their money to taxes won't do much to reduce the amount they spend on those.
However, the lower income segment, where UBI will have a much higher impact, will start spending a lot more on these items. Because, in theory, they were not spending as much as they would want to on them previously (bad housing, cheap food, etc.. could be improved).
As such, the demand for those "survival" items could increase a fair amount, causing the prices for them to increase. If you consider this inflation (which I would, since it's a rise in prices for things that matter), then there would likely be inflation.