All salary discussions need a cost of living context. Yes in Europe you earn a bit less but the public services are much better than in the US and one emergency (r.g. healthcare) won't ruin you as it's mostly a public system.
I'll take a Euro salary and qualify life over a FIRE-typs salary and daily fear of falling into the abyss any day.
Given the topic and the fact llm providers charge global rates, the absolute take-home money is much more relevant. Even if you live like a king on $1000/mo, 5.5 pro is still $200.