With a security initiative, OpenAI competes with Anthropic's Mythos and also offers a security review service for open-source ...

OpenAI is now turning its Daybreak initiative into a defensive cybersecurity program that combines Codex updates, the GPT-5.5-Cyber release and partner access for approved organizations. As OpenAI ...

OpenAI is advancing Daybreak beyond vulnerability discovery into patch automation, launching an updated Codex Security plugin, the full GPT-5.5-Cyber model in limited release, a Daybreak Cyber Partner ...

OpenAI has deployed GPT-5.5-Cyber to execute automated open-source vulnerability remediation alongside security firm Trail of ...

OpenAI on Monday said it's releasing an improved version of its GPT‑5.5‑Cyber model to trusted defenders as part of the Daybreak initiative the artificial intelligence (AI) company announced last ...