How you answer this question will offer the interviewer insights into your confidence and your self-perception. 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. It also offers you an opportunity to circle back to previous questions where you could have elaborated on more.

Be confidently honest with the interviewer about how you feel the interview has gone so far. If you feel you're knocking it out of the park, say so while being as modest as possible. Consider any relevant remarks the interviewer's said, and include this in your response if appropriate. This will demonstrate that you are an active listener and that you pay attention to details. If you feel you've left out any relevant information, be sure to mention it.