OpenAI just released its answer to Claude Mythos
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OpenAI Daybreak is a new AI security agent initiative, highly relevant and novel.
OpenAI launched Daybreak, a security initiative combining GPT-5.5-Cyber and the Codex Security agent to automate threat modeling and vulnerability patching. It arrives just over a month after Anthropic's Claude Mythos and integrates GPT-5.5 with Trusted Access for Cyber, alongside industry and government partnerships to deploy increasingly capable cyber models.
Evaluate Daybreak's agent-based vulnerability detection for integrating into your CI/CD and security workflows.
For a senior engineer building AI agents and cloud infrastructure, Daybreak signals a shift toward agent-driven security automation that could reshape DevSecOps pipelines and threat response strategies.