Artificial intelligence (AI), in combination with the tumor marker KI-67, offers a promising approach for the early detection of breast cancer and the prediction of its aggressiveness. AI algorithms, trained with biopsy images and KI-67 data (an indicator of cell proliferation speed), can identify with high precision complex patterns that escape the human eye. This synergy allows us to detect tumors at earlier stages, when they are more treatable, and predict their behavior, guiding the choice of the most effective therapy for each patient.