For more detailed information on gear and effects that change perpetuation cost: Avatar Perpetuation Cost - FFXIclopedia

Perpetuation cost refers to the cost of maintaining an Avatar or Spirit Pact once it has been summoned in Final Fantasy XI. The cost of summoning and maintaining an avatar or spirit pact changes the higher level the summoner is. The chart below will outline how that cost increases each level.

MP/Tick Carbuncle Fenrir Avatar/Diabolos Elemental *
Initial Summoning 5 MP 15 MP 7 MP/15 MP 10 MP
1 Lv.1 Lv.1 Lv.1
2 Lv.10 Lv.8 Lv.19
3 Lv.18 Lv.15 Lv.1 Lv.38
4 Lv.27 Lv.22 Lv.10 Lv.57
5 Lv.36 Lv.30 Lv.19 Lv.75
6 Lv.45 Lv.37 Lv.28 Lv.81
7 Lv.54 Lv.45 Lv.38 Lv.91
8 Lv.63 Lv.51 Lv.47
9 Lv.72 Lv.59 Lv.56
10 Lv.81 Lv.66 Lv.65
11 Lv.91 Lv.73 Lv.68
12 Lv.81 Lv.71
13 Lv.91 Lv.74
14 Lv.81
15 Lv.91
  • As of the March 27, 2012 Update the "Elemental MP Cost" Merit no longer exists; "Summoning Magic Cast Time" has taken it's place and the Spirits overall Perpetuation Cost has been reduced.