OpenAI Launches GPT-5.4-Cyber with Expanded Access for Security Teams - The Hacker News

By The Hacker News | Published: Apr 15, 2026

OpenAI on Tuesday unveiled GPT-5.4-Cyber, a variant of its latest flagship model, GPT‑5.4, that's specifically optimized for defensive cybersecurity use cases, days after rival Anthropic unveiled its… [+2422 chars]