Latest tests from the US AI Safety Institute (AISI) show that OpenAI’s GPT-5.5 performs on par with the much-hyped Mythos Preview in cybersecurity capability tests, suggesting AI cyber threats are not ‘a breakthrough specific to one model.’
DoD CTO Emil Michael says Anthropic remains a supply chain risk, but its advanced cyber-capable Mythos model is a separate national security issue, as the Pentagon announces agreements with seven AI companies for classified network deployment.
The US Cybersecurity and Infrastructure Security Agency (CISA) has been denied access to Anthropic’s latest powerful AI model Mythos, raising concerns about the government’s cybersecurity capabilities.