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OpenAI to roll out limited GPT-5.5 Cyber to vetted security professionals first

OpenAI will first release its cybersecurity-focused model, GPT-5.5 Cyber, to selected users, TechCrunch reported on April 30. CEO Sam Altman said on X that the model would be rolled out over the next few days to “key cybersecurity stakeholders.” OpenAI has set up an application process requiring eligibility details and a usage plan. The model can perform tasks such as penetration testing and vulnerability exploitation, raising misuse concerns.