Claude Code Review Ships as Multi-Agent PR Analysis System: 84% of Large PRs Generate Findings at $15-25 per Review

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Anthropic launched agent-based Code Review for Claude Code, using a fleet of specialized agents that examine diffs in parallel on Anthropic infrastructure. Each agent targets different issue classes (logic errors, security vulns, edge cases, regressions), with a verification step filtering false positives. Internal adoption increased substantive review comments from 16% to 54% of PRs, with 84% of 1,000+ line PRs generating findings averaging 7.5 issues. Reviews complete in ~20 minutes at $15-25 per PR — pricing that may limit adoption for smaller teams.