Claude Opus 5 Code Quality: What Sonar’s Benchmark Reveals

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Claude Opus 5 hits an 88.6% coding pass rate, with lower bug and vulnerability density—but generates 2.3× more code than Opus 4.8.
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Claude Opus 5 hits an 88.6% coding pass rate, with lower bug and vulnerability density—but generates 2.3× more code than Opus 4.8.