AION 2 Global max level is 45 for Season 1. The Launch Scale Test is temporarily capped at 37. See the confirmed 20, 28, 35 and 45 Expedition unlock landmarks.
37 is the temporary Launch Scale Test cap. 45 is the Global Season 1 launch cap. The test is intentionally limited and wiped after Day 2, so its cap is not the retail progression ceiling.
Level 45 is the first sensible endpoint for launch-route planning. That makes the 20 → 28 → 35 → 45 Expedition thresholds more useful than generic “rush to cap” advice copied from another regional patch.