OpenAI Opens Cybersecurity Model to Defenders in Race With Anthropic
In a major shift toward defensive AI deployment, OpenAI has launched its new cybersecurity-focused model, GPT-5.4-Cyber, granting access to thousands of vetted security professionals. The move signals an intensifying race with rival Anthropic, which recently introduced its own defensive AI system, Mythos. The release marks a strategic pivot in how advanced AI models are distributed….