Claude Opus 5 nears Mythos 5 on bug finding but trails badly on real exploits

eyishazyer · x · 2026-07-25

A follow-up chart from the same Claude Opus 5 release highlights OSS-Fuzz results.

Opus 5 comes close to Mythos 5 on vulnerability identification, but lags far behind in turning those findings into working exploits. The thread uses that gap to argue that Opus 5 is safer for broad deployment.

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