In C++, `type_info` is a class that provides information about types at runtime. It is part of the RTTI (Run-Time Type Information) system, which allows the program to determine the type of an object during execution. The `type_info` class is typically used with the `typeid` operator, which returns a reference to a `type_info` object representing the type of a given expression. The `type_info` class includes methods such as `name()`, which returns a human-readable name of the type, and `hash_code()`, which provides a unique identifier for the type. This information is useful for tasks like dynamic casting and type comparisons, enhancing the flexibility and safety of C++ programs.