The sibling rivalry of Thor and Loki is a never-ending one although the two seem to know how to team up together for a good cause. Asgardians live for about 5,000 years and Loki’s only been around for 1,070 of those years, which, relative to humans, makes him about 21.4 years old.
Thor, on the other hand, is 1,500 years old, which makes him about 30 years old in human years. The two brothers Thor and Loki are very old in comparison to Humans but they have a significant age difference between them.
Loki was the biological son of Laufey, the ruler of the Frost Giants who was abandoned and left to die shortly after his birth. He was taken to Asgard and raised by Odin and Frigga as an Asgardian prince. The two are similar in the ways that they’re both great, strong warriors but they don’t like each other. However, they’re different in the ways that while one of them is a trickster and a traitor, the other is a great hero and a protector.