Daybreak

Frontier AI for defenders.

OpenAI Daybreak is a cybersecurity platform for defenders that combines frontier cyber models, Codex Security workflows, trusted access controls, and ecosystem partnerships to find, validate, prioritize, and remediate software vulnerabilities.

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releasePRIMARY2026-05-11

OpenAI launches Daybreak with GPT-5.5-Cyber, Codex workflows, and repo scanning

OpenAI launched Daybreak, combining GPT-5.5, Codex workflows, repo scanning, threat modeling, and patch generation for cyber-defense teams. It packages frontier models into a continuous secure-software workflow, so teams can test whether it fits their response pipeline.