Opus 5 improves on Opus 4.8 for cybersecurity tasks but still lags significantly behind Mythos 5 in exploit development capability. The model includes safeguards intended to permit legitimate developers to identify and remediate software vulnerabilities while preventing high-risk or malicious uses.
Opus 5 outperforms Opus 4.8 on cybersecurity tasks according to @claudeai, indicating an improvement in defensive or analytic capability between those versions.
Opus 5 is stronger than Opus 4.8 on cybersecurity tasks. But it remains substantially behind Mythos 5 at developing exploits.
Its safeguards are designed to allow developers to identify and fix software vulnerabilities, while blocking high-risk uses.