daybreak

Trail of Bits launched Patch the Planet, a security initiative using OpenAI's GPT-5.5-Cyber model to find and fix bugs in critical open-source projects. The first week produced 64 pull requests and 51 issues across 19 projects including cURL, Python, PyPI, and Sigstore, with 37 patches already merged.

OpenAI has launched Daybreak, a security-focused AI initiative that uses the Codex Security agent and new GPT-5.5-Cyber models to automatically detect and patch software vulnerabilities. The release follows Anthropic's Claude Mythos announcement by one month.