
OpenAI Launches Daybreak to Compete with Claude Mythos in Cyber Defense
OpenAI has launched Daybreak, a cybersecurity initiative that embeds defense into software from the start, using GPT-5.5 and Codex Security to triage, patch, and validate vulnerabilities with audit-ready evidence; aimed at rivaling Anthropic's Claude Mythos, it teams with partners like Cloudflare, Cisco, CloudStrike, Palo Alto Networks, Oracle and Akamai, and builds on Mythos' earlier patching success.
