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Interesting findings from @AISecurityInst - GPT-5.6-Sol and Claude Mythos 5 seem to have similar cyber capabilities and can enable infrastructure compromise - Chinese OS models are closer to Opus 4.5 (released 7mo ago), much more limited in cyber... Kimi K3 not yet benchmarked
Here's how to add the Codex Security plugin in Codex and get started: Add the plugin in Codex. After installation is complete, the button changes to “Try in chat.” Click “Try in chat” to start a new Codex chat with a Codex Security scan prompt ready to run. Choose a folder that contains the code you want Codex Security to review. Send the scan prompt. Codex opens with the Codex Security scan prompt ready. Press “Send” to start the scan.
GPT-5.6 Sol sets a new state of the art in cybersecurity on “The Last Ones” cyber range. We’re already seeing that capability translate into defensive outcomes: helping teams find, validate, and fix vulnerabilities in real-world code. Put it to work with Codex Security: https://openai.com/daybreak/codex-security-plugin/#desktop-codex
GPT-5.6 Sol is the state of the art in cyber. Seeing significant results in applying it to finding and fixing novel vulnerabilities. Sign up as a defender to use it to secure your systems: https://openai.com/daybreak/
On our cyber range "The Last Ones", GLM-5.2 matches Opus 4.5, released ~7 months before it, while DeepSeek’s V4-Pro falls below Sonnet 4.5, from ~7 months before it.