OpenAI launches GPT-5.5-Cyber and Codex Security to automate patch management (opens in new tab)

OpenAI has expanded its Daybreak initiative to address the growing bottleneck in software security by shifting focus from vulnerability discovery to automated patching. The centerpiece of this update is the full release of GPT-5.5-Cyber, a specialized model designed for defensive cybersecurity operations. This new model outperformed competitors in industry benchmarks, achieving an 85.6% score on CyberGym and significantly higher results in exploit mitigation tests than previous versions. <a h...