What is the difference between Max Model and Max Mode?

cursor 0.50 version provide a new MAX Mode
but still exist max model in model setting, like: Claude-3.7-sonnet-max、Claude-3.7-sonnet-thinking-max、gemini-2.5-pro-max

what the difference between Max Mode and max Model ?

and why replace “thinking” keyword in thinking model, that maybe cause extra usage cost