Described by OpenAI as a new model tuned for defensive cybersecurity tasks, GPT-5.4-Cyber is being offered first to vetted security researchers, vendors and organizations.
OpenAI Group PBC today announced the launch of GPT-5.4-Cyber, a fine-tuned variant of its GPT-5.4 model designed for defensive cybersecurity work and also announced a significant expansion of its ...
Artificial intelligence (AI) may have dominated wider tech headlines this year – and this held true in the cyber world as well – but at the same time, the security community’s concerns extend far ...
Mythos is supposedly so powerful that Anthropic is not making it generally available, instead providing it to only a few ...
OpenAI has announced a new AI model called GPT-5.4-Cyber. Similar to Anthropic’s Claude Mythos, this new “cyber-permissive” variant of its GPT-5.4 is built for defensive cybersecurity and not public ...
OpenAI launches GPT-5.4-Cyber with selective access for verified defenders, adding a cyber-focused model and tighter controls for high-risk use.
In short: OpenAI is releasing GPT-5.4-Cyber, a model fine-tuned for defensive cybersecurity with lowered refusal boundaries and binary reverse engineering capabilities, and scaling its Trusted Access ...