Pattern: Model-Version-Dependent Code Review Creates an Unsolvable Bootstrap Problem

paddo.dev·medium signal

paddo.dev's May 24 analysis reveals that Anthropic uses Claude Code (Opus 4.6) to review its own PRs, but Opus 4.7 catches bugs that 4.6 missed — meaning the reviewer is always one version behind the bugs it needs to catch. By the time a model is good enough to find a given class of bug, that bug is already in production. This applies to any team using AI code review: your reviewer's blind spots are systematically correlated with the bugs your codebase is most likely to introduce.