restricted access

3 articles tagged with restricted access

May 1, 2026
model releaseOpenAI

OpenAI restricts GPT-5.5-Cyber to select defenders weeks after criticizing Anthropic for similar approach

OpenAI is releasing GPT-5.5-Cyber to a limited group of trusted cyber defenders, according to CEO Sam Altman. The move comes weeks after Altman criticized Anthropic for restricting access to its Claude Mythos cybersecurity model to approximately 50 organizations.

April 30, 2026
model releaseOpenAI

OpenAI announces GPT-5.5-Cyber model, restricts access to vetted cybersecurity defenders

OpenAI CEO Sam Altman announced GPT-5.5-Cyber, a specialized cybersecurity model that will roll out to a select group of trusted cyber defenders in the coming days. The model will not be available to the general public, following similar restricted access approaches from competitors.

April 15, 2026
model releaseOpenAI

OpenAI releases GPT-5.4-Cyber, a cybersecurity-focused model limited to verified security professionals

OpenAI has released GPT-5.4-Cyber, a fine-tuned variant of GPT-5.4 built for defensive cybersecurity work including binary reverse engineering. Access is initially restricted to a few hundred verified security professionals, with expansion planned to thousands of individuals and hundreds of teams in coming weeks.