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Claude code quality regression and increased bug introduction

April 5, 2026Dave Kennedy

Dave Kennedy reports Claude quality has degraded over three weeks with metrics and a steady increase in bugs introduced, while Codex is outperforming Claude on code quality for his work.

Claude 3 weeks ago was absolutely fantastic - it's noticeably degraded with data / metrics to support this (for me).
Still a Claude fan, but codex is smoking it right now on code quality.
I've been tracking bug defects through a GPT plugin, for about 3 weeks, its been on a steady increase of bugs introduced by Claude.
Something bad is going on right now over at Claude, has gotten 25% worse from 3 weeks ago:
Dave Kennedy
claudequality regressioncodingclaude

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