§ models · storyline
OpenAI says new GPT-5.5-Cyber outperforms Anthropic's Mythos on cybersecurity benchmark
OpenAI launches GPT-5.5-Cyber and expands its Daybreak cybersecurity initiative with an updated Codex Security plugin and a partner network of over 25 security firms and governments.
OpenAI is expanding its Daybreak cybersecurity initiative with an updated Codex Security plugin, the full GPT-5.5-Cyber model, and a partner network with more than 25 security firms and several governments. The focus shifts from finding vulnerabilities to patching them automatically.
The article OpenAI says new GPT-5.5-Cyber outperforms Anthropic's Mythos on cybersecurity benchmark appeared first on The Decoder.
§ sources3 publications · timeline below
§ how this story moved
- primary — MSN publishes the launch post.
- GlobeNewswire picks up coverage.
- The Decoder picks up coverage.