https://the-decoder.com/gpt-5-5-matches-claude-mythos-in-cyber-attack-tests-uk-ai-security-institute-finds/
GPT-5.5 matches Claude Mythos in cyber attack tests, UK AI Security Institute finds
May 1, 2026 - OpenAI's GPT-5.5 is the second AI model capable of autonomously solving a full network attack simulation, according to the UK AI Security Institute. Its...
uk ai security institute