OpenAI released GPT-5.5-Cyber, a model that finds vulnerabilities cheaply but shifts the bottleneck to patching. The model discovered dozens of bugs in OpenBSD, Linux, FreeBSD, Chrome, Safari, and oth…
OpenAI announced that its new GPT-5.5-Cyber model outperforms Anthropic's Mythos on a cybersecurity benchmark, as part of an expanded Daybreak initiative that includes an updated Codex Security plugin…
OpenAI released an improved GPT-5.5-Cyber model for vulnerability discovery and patching, expanded its cybersecurity partner program, and launched a Patch the Planet initiative to secure 30 open sourc…
OpenAI launched new security tools including the GPT-5.5-Cyber model, an updated Codex Security plugin, and the Patch the Planet open-source initiative. The company shifts from vulnerability discovery…
Trail of Bits engineers, in partnership with OpenAI's Daybreak initiative, launched Patch the Planet, a week-long effort using frontier AI models like GPT-5.5-Cyber to find and fix vulnerabilities in …
The European Commission announced on May 29, 2026, that it will intensify discussions with the U.S. administration regarding advanced AI models with cyber capabilities, following concerns over Anthrop…
Japan's three megabanks—MUFG, SMBC, and Mizuho—will receive OpenAI's GPT-5.5-Cyber model for cyber defense through a verified-defender program, Finance Minister Satsuki Katayama announced. The deal, b…
OpenAI announced on May 21 it will supply its specialized GPT-5.5-Cyber model to Japan’s three megabanks and the Japanese government for cybersecurity defense. The deployment follows Anthropic’s relea…
OpenAI will supply its GPT-5.5-Cyber model to Japan's three largest banks — MUFG Bank, Sumitomo Mitsui Banking Corp., and Mizuho Bank — as part of a US-Japan cybersecurity initiative covering 15 criti…