The security industry is entering a period of compression. Model cybersecurity capabilities are rapidly increasing, and it's critical we arm defenders with the tools they need to protect what matters most.
We're launching two models today:
GPT-5.5 with TAC (Trusted Access for…
— DANΞ (@cryps1s) May 7, 2026
Two models models are launching today; GPT-5.5 with «Trusted Access for Cyber» that requires some vetting to get into. It can handle defensive security, do code review, malware analysis and patch validation.
GPT-.5.5-Cyber requires stronger verification and does specialized workflows, red teaming, penetration testing and controlled validation.
GPT-5.5 Cyber was earlier found on par with Anthropic’s Mythos model, that has been spooking the establishment lately.
The vetting approach for the Cyber model has been «informed by conversations with cybersecurity and national security leaders across federal and state government and major commercial entities,» OpenAI says.
Read more: OpenAI’s blog, CNBC, Axios.