Dev revisits Opus 4.6 project with Opus 5.5, finds it spotting old bugs unprompted

rms80 · x · 2026-10-18

Developer rms80 shared that revisiting an old Opus 4.6 project with Opus 5.5 revealed the new model casually discovering numerous pre-existing bugs while doing general work — not explicitly hunting for them, just noticing them as it passes through the code.

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