The second number means the amount of time a player gets after he makes a move.
So 5|5 means that each player starts with 5minutes, and after a player makes a move he gets +5seconds.
What is difference in 5 min and 5|5?

Im confused about the options for games. In live chess I see that there is a 5 min option and a 5|5 option. What is the difference? Also what does it mean by 15|10? Why are the numbers different? Noob question but thanks for the response.
It means that white has 15 minutes and black has 10 minutes.

Im confused about the options for games. In live chess I see that there is a 5 min option and a 5|5 option. What is the difference? Also what does it mean by 15|10? Why are the numbers different? Noob question but thanks for the response.
It means that white has 15 minutes and black has 10 minutes.
What? I had always thought it meant white would get 15 elo points if he won, and black would get 10...
Im confused about the options for games. In live chess I see that there is a 5 min option and a 5|5 option. What is the difference? Also what does it mean by 15|10? Why are the numbers different? Noob question but thanks for the response.