AI
OpenAI launches Codex Security plugin powered by GPT-5.6 Sol, claims top cybersecurity benchmark
OpenAI announced that GPT-5.6 Sol has achieved state-of-the-art performance on "The Last Ones" cyber range benchmark, and is now available for practical defensive use through a new Codex Security plugin. The plugin, available directly inside Codex, lets development teams scan folders of real-world code for vulnerabilities, validate findings, and apply fixes — positioning OpenAI's coding agent as a security tool, not just a productivity one. Sam Altman flagged the launch approvingly, and the company highlighted thousands of community use cases for GPT-5.6 Sol alongside the announcement.
Setup requires adding the Codex Security plugin within the Codex interface, after which users are prompted to select a folder and run a preconfigured security scan. The step-by-step rollout suggests OpenAI is pushing Codex toward enterprise security workflows, a market where rivals like Google and Anthropic are also actively competing.
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