wp user create
wp user create <user-login> <user-email> [--role=<role>] [--user_pass=<password>] [--user_registered=<yyyy-mm-dd-hh-ii-ss>] [--display_name=<name>] [--user_nicename=<nice_name>] [--user_url=<url>] [--nickname=<nickname>] [--first_name=<first_name>] [--last_name=<last_name>] [--description=<description>] [--rich_editing=<rich_editing>] [--send-email] [--porcelain]
Examples
# Create user
$ wp user create bob bob@example.com --role=author
Success: Created user 3.
Password: k9**&I4vNH(&
# Create user without showing password upon success
$ wp user create ann ann@example.com --porcelain
4