GPT-5.5-Cyber: OpenAI's Frontier Security Model Rolls Out Within Days
Sam Altman announced that GPT-5.5-Cyber — described as a "frontier cybersecurity model" — will begin rolling out to critical cyber defenders within days. OpenAI plans to work with government and the broader ecosystem to define criteria for trusted access, with the stated goal of rapidly securing companies and critical infrastructure.
Why It Matters
A dedicated cybersecurity-grade frontier model with government coordination signals a new phase in AI's role in national security infrastructure. The simultaneous absence of external regulatory oversight for such deployments remains an open governance question — raised by analysts the same day (see related Mythos item).