OpenAI expands Daybreak initiative with GPT-5.5-Cyber to automate patch management (opens in new tab)

OpenAI has significantly expanded its Daybreak cybersecurity initiative to transition from merely discovering software vulnerabilities to automating the entire remediation process. The program now integrates the full release of GPT-5.5-Cyber, an updated Codex Security plugin, and the Patch the Planet initiative for open-source software. This shift addresses a growing industry bottleneck where the speed of AI-driven flaw discovery has historically overwhelmed the manual capacity of developers ...