OpenAI has introduced Daybreak, a new cybersecurity initiative that directly competes with Anthropic's Project Glasswing. This initiative leverages various AI models, including the specialized security agent Codex, to enhance cyber defense capabilities. OpenAI emphasizes that effective cyber defense should be integrated into software development from the beginning, rather than merely addressing vulnerabilities after they are discovered. Daybreak aims to prioritize high-impact security issues, reducing the time required for analysis from hours to mere minutes. The initiative can generate and test patches within code repositories, providing clients with audit-ready evidence of the results. Daybreak will utilize GPT-5.5 for general purposes and specialized workflows, including secure code review and vulnerability triage. OpenAI is already collaborating with notable partners such as Cloudflare, Cisco, CloudStrike, Palo Alto Networks, Oracle, and Akamai to enhance its cybersecurity offerings.