OpenAI’s Sam Altman says GPT-5.5-Cyber to launch for cyber defenders with focus on trusted government access

Sam Altman has said that a new frontier cybersecurity-focused model, GPT-5.5-Cyber, will begin rolling out to critical cyber defenders in the coming days, signalling a sharper push by OpenAI into security applications of AI.

In a post on X, Altman outlined the company’s approach to controlled deployment and collaboration with public institutions. “We will work with the entire ecosystem and the government to figure out trusted access for cyber; we want to rapidly help secure companies and infrastructure,” he said.