OpenAI Daybreak Goes Head To Head With Anthropic To Redefine Security

The frontier AI race is setting its sights on cybersecurity. On Monday, OpenAI announced Daybreak, a cybersecurity initiative designed to help defenders leverage frontier AI models to identify and patch software vulnerabilities with AI.

According to the announcement blog post, Daybreak has been developed to help make software resilient by design. "It starts from the premise that the next era of cyber defence should be built into software from the beginning by not only finding and patching vulnerabilities, but being resilient to them by design," the post said.

As part of the initiative, OpenAI will provide customers with access to GPT-5.5, GPT-5.5 with Trusted Access for Cyber and GPT 5.5-Cyber to support a range of defensive use cases. Potential use cases include secure code review, vulnerability triage, malware analysis, detection engineering, patch validation, red teaming and penetration testing.

The announcement comes just after OpenAI announced the launch of GPT-5.4-Cyber, a cyber-permissive AI model designed to support defensive use cases as part of the startup's Trusted Access for Cyber (TAC) program.