I am having a problem with TT's calculation of AGI, based on my 1098-T. Box 1:64549.Box 4:13008.Box 5:133710.Box 6:25620. The AGI should be 56549; TT shows 43541. Why?

Boxes 4 and 6 correctly show stipend for 2023-net 12612. Everything seems fine with the 1098-T data but why is TT showing 13008 lower? Looks like a problem with box 4 info?