OpenAI launches Daybreak to take on Anthropic’s Mythos in cyber defence

The new platform pairs GPT-5.5 variants with Codex Security and a roster of enterprise security partners, all aimed at defenders. OpenAI has unveiled Daybreak, a cybersecurity initiative aimed at finding software vulnerabilities, generating patches, and validating fixes inside enterprise codebases. The launch positions OpenAI directly against Anthropic’s Mythos, which has spent the past few months […] This story continues at The Next Web