OpenAI launches Daybreak cybersecurity suite with GPT-5.5-Cyber model

OpenAI Blog

GPT-5.5-Cyber scores 85.6% on CyberGym benchmark, up from 81.9%. The suite includes Codex Security plugin and the Patch the Planet initiative, in partnership with Trail of Bits, HackerOne, and Califf, to help open-source maintainers patch vulnerabilities.

OpenAICybersecurityCodex

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