OpenAI expands Daybreak with GPT-5.5-Cyber and Patch the Planet

OpenAI Group PBC expanded its Daybreak cybersecurity program with Patch the Planet, an open-source patching initiative, an updated Codex Security plugin, a partner program, and the full release of GPT-5.5-Cyber, its most capable defensive model. The push marks a shift in how OpenAI talks about AI and security.