At a Glance · AI-generated

OpenAI expanded its Daybreak initiative on June 22 with the full release of GPT-5.5-Cyber and a new program called Patch the Planet aimed at identifying and fixing vulnerabilities in open-source software. The company positioned the cybersecurity-focused model as outperforming Anthropic's competing Mythos system on security benchmarks. OpenAI framed the effort as shifting AI's role from merely detecting vulnerabilities to actively remediating them across open-source projects.