You can sign up for the Max plan through several paths:
New Users
Visit claude.ai
Create a new account
During the onboarding process, select the Max plan option
Choose your preferred usage tier (5x or 20x)
Enter your payment information
Confirm your subscription
Existing Free Users
Log in to your Claude account
Go to Settings > Billing
Select "Upgrade to Max"
Choose your preferred usage tier (5x or 20x)
Enter your payment information
Confirm your subscription
Existing Pro Users
Log in to your Claude account
Go to Settings > Billing
Select "Upgrade to Max"
Choose your preferred usage tier (5x or 20x)
Confirm your upgrade
Your Pro plan will be upgraded to Max immediately, with billing adjusted on a prorated basis for the remainder of your current billing cycle.
Note: When moving from an annual Claude Pro plan to a Max plan, if the remaining balance on your annual plan is greater than your Max plan price, you will receive a credit to your account for the remaining balance. This credit will be applied to future subscription costs.