#OpenAI releases GPT-5.4-Cyber, a version specifically designed for security scenarios based on GPT-5.4. The core change is that under certain conditions, some restrictions on security-related requests are relaxed, such as binary reverse engineering, which won't be immediately rejected. However, this model is not open to the public and is only available through "Trusted Access for Cybersecurity (TAC)" for vetted security vendors, corporate teams, and researchers.