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Claude Code multi-agent review catches more bugs at 190 times the cost

What to do

Run /code-review high on Opus 5.5 for most reviews, and keep max multi-agent mode for critical changes.

Why

Max mode caught 23 of 27 serious bugs but cost about $21 per review and took 56 minutes.

Read the source at quickchat.ai Discussion

What the research found

Benchmark test of Claude Code local /code-review: max multi-agent mode caught 23 of 27 serious bugs vs 21 for single agent, but cost about $21 per review vs 11 cents and took 56 minutes vs 40 seconds; author recommends /code-review high on Opus 5.5 (51 of 66 bugs, about 36 cents each).

Claims and how well the evidence supports them

  1. Multi-agent /code-review max cost about $21 per review versus 11 cents for a single agent 86%
  2. Multi-agent review took 56 minutes versus 40 seconds for single agent 94%
  3. Multi-agent review caught 23 of 27 serious bugs versus 21 for single agent on 20 hard PRs 99%
  4. Start with /code-review high on Opus 5.5 which caught 51 of 66 serious bugs for about 36 cents each 98%

Evidence

Actionability rated medium.