- Claude Team plan is limited to 150 now[1]. You can mix between Premium (equivalent of Max 5x) and standard (Pro like)

- ChatGPT business is not user count limited (AFAIK) however business plan only supports the equivalent of Plus there is no Pro equivalent.

For larger organizations it will still come down to usage billing . The ChatGPT plan is quite limiting for most users and the only option is usage/credit billing for more consumption. Claude has the more generous usage in Team but limited to 150 users.

[1] it was only 75 till late Feb.