GLM-5.3 and the spread of advanced cyber capabilities
Andrew Fasano, Marius FleischerCole McFaul, Robert Xiao, Tripp GallagherFive months ago, we announced Claude Mythos Preview, the first AI model that could autonomously build sophisticated, end-to-end cyber exploits. The rapid rate of improvement in AI suggested to us that this ability would eventually proliferate to many other models, making it much easier for malicious cyber actors to launch highly impactful cyberattacks.In light of these considerations, we chose to release Claude Mythos Previe