Even at the Max plan it's not unlimited. IIRC they say the limit is something like 20x the $20 plan. With "normal use" you're unlikely to hit the limit though,

Even at the Max plan it's not unlimited. IIRC they say the limit is something like 20x the $20 plan. With "normal use" you're unlikely to hit the limit though, unless you only use the Opus model and do things in parallell.