How would you rate your performance in this interview so far?

The interviewer is looking for your honest thoughts on how you feel about your interview performance. The interviewer has their perception, and you have yours. This will reveal how well aligned your realities are and offer insights into your sense of confidence and self-awareness. Consider what the interviewer has said so far and include this in your response, if appropriate. This will demonstrate that you are an active listener and that you pay attention to details. It also offers you an opportunity to circle back to previous questions you could have elaborated on more. If you feel you've left out any relevant information, be sure to mention it. Be truthful and transparent, even if you think that the interview could have gone better. If you feel you're knocking it out of the park, say so by being as modest as possible. Never ask them how they think you are doing. This defeats the purpose of the question. Answering a question with a question is not wise in an interview.