Claude Opus 5 tops a cybersecurity benchmark but becomes noisier when it overworks
Thom_Wolf · x · 2026-07-29
A cybersecurity benchmark run on Claude Opus 5 found that it uncovers more vulnerabilities than other frontier models, slightly ahead of GPT-5.6 Sol.
The authors also say Opus 5 is noticeably more “hyperactive” than earlier generations: that extra effort helps it find more bugs, but it makes the results noisy and less stable.
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