OpenAI launches Daybreak cybersecurity platform to rival Anthropic

OpenAI has introduced Daybreak, a new cybersecurity platform designed to compete with Anthropic's offerings. The platform leverages OpenAI's GPT-5.5 models and the Codex Security agent to autonomously identify and patch software vulnerabilities before they can be exploited by attackers. This move positions OpenAI directly against Anthropic in the growing AI-driven cybersecurity market. The launch underscores the escalating competition among AI companies to secure enterprise clients and critical infrastructure. Daybreak aims to provide proactive defense mechanisms, reducing the window of exposure for zero-day vulnerabilities. The platform's ability to integrate with existing development workflows could streamline security operations for organizations. OpenAI's entry into this space signals a strategic expansion beyond general-purpose AI into specialized, high-stakes applications.