What is alr mean in chat?

As an AI language model, I do not have access to the context of where the term "alr" was used in a chat. However, "alr" can be an abbreviation for various phrases like "all right," "already," and "alright." It is often used in informal communication, such as text messages, social media chats, and online forums. It signifies agreement or confirmation to something that has been discussed or suggested.