Claude Max costs $100 per month and lets you send up to 5x the usual messages...

https://wiki-canyon.win/index.php/When_Does_Max_20x_Make_Sense_Based_on_Token_Volume%3F

Claude Max costs $100 per month and lets you send up to 5x the usual messages in any rolling five-hour period, with peak boosts hitting 20x. But heads up: weekly caps don’t grow much, so if you plan heavy use, watch your limits closely