Today, the challenges and opportunities that are now inherent in the development of generative artificial intelligence (GAI) for cybersecurity are evolving rapidly. As such, this article examines the proactive capabilities of GAI, with a focus on how it has revolutionized the concept of cyber threats and the approaches to threat intelligence. It investigates the predictive and adaptive potential of GAI to combat sophisticated attack vectors, zero-day vulnerabilities, and automated threat modeling. According to studies, this research highlights that GAI can predict attack patterns with 87% accuracy and detect zero-day vulnerabilities with 80% precision. In addition, GAI-based intrusion detection systems (IDS) exhibit high detection rates (98% for known threats and 92% for unknown threats) at low false positive rates. This data shows that integrating GAI into cybersecurity enables organizations to discover vulnerabilities prior to exploitation, simulate realistic attack scenarios, and automate threat reactions. However, as with GAI in cybersecurity, there are significant. ethical and operational risks of GAI in cybersecurity, including the capacity to enable adversaries and magnify existing vulnerabilities that need close regulatory oversight. Organizations leverage their predictive power to anticipate and proactively secure their digital infrastructure from emerging threats, moving from an earlier reactive to a more anticipatory security posture. In the end, the findings from this research point to the need to strategically leverage GAI to strengthen cybersecurity strategies by creating fortified defenses in an ever more complicated digital environment.