It's very simple to identify Xi leap from leap

From the CLI of the PC, run the command "nuclei availability_zone.list" to list the Availability Zones connected to the local AZ

For Xi leap availability zone name shows name as US-WEST-1B

nutanix@cvm$ nuclei availability_zone.list 
"Total Entities : 2"
"Length : 2"
"Offset : 0"
"Entities :"
Name        UUID                                  State     
Local AZ    e007dd9a-1910-4a82-a4a5-9a9c7110d0f5  COMPLETE  
US-WEST-1B  cce71719-d160-47b0-874a-171a61f8e6ee  COMPLETE 

For leap it should start something like

PC_xxx.xx.xx.xx

Xi leap can be found in PC by clicking on gear icon-->Xi cloud service

For details please refer leap administration guide

leap guide