I think the most interesting response I've gotten was one where gpt-4 noticed halfway through a response that it had made an error, apologized and then put the

I think the most interesting response I've gotten was one where gpt-4 noticed halfway through a response that it had made an error, apologized and then put the corrected sentence. When I queried it, it claimed it generates the response a token at a time, and could not back up when it realized the message was incorrect, but I don't know enough about how the tech works to ascertain the veracity of the statement.