ai, AISI, Anthropic, cybersecurity, GPT-5.5, Mythos, openai, Security, testGPT-5.5 matches heavily hyped Mythos Preview in new cybersecurity tests n Kyle Orlandn / May 1, 2026 New results suggest Mythos’ cyber threat isn’t “a breakthrough specific to one model.”
ai, AISI, Anthropic, claude, Mythos, SecurityUK gov’s Mythos AI tests help separate cybersecurity threat from hype n Kyle Orlandn / April 14, 2026 New model is the first AI system to complete a difficult multi-step infiltration challenge.