Second Model Review Pattern

The second model review pattern uses another model as a focused reviewer rather than as a competing author.

The pattern works best when the first model has already produced a concrete artifact: a patch, test plan, summary, prompt, spreadsheet formula, or design decision. The second model should not be asked to redo the whole task from scratch. It should be asked to find risks: missing tests, hidden assumptions, overbroad changes, stale references, security exposure, unclear edge cases, or places where the artifact does not match the acceptance criteria.

A good review prompt includes the goal, the artifact, the constraints, and the evidence already collected. It also asks the reviewer to prioritize findings by severity. This keeps the second model from generating a parallel answer that sounds different but is not more correct. The output should be a short list of actionable issues and explicit “no issue found” statements where relevant.

The main failure mode is model ping-pong. If two models keep rewriting each other without new evidence, the workflow gets slower and less reliable. A second model review should end with one of three outcomes: accept, fix a specific issue, or gather new evidence. It should not become an endless debate about style.

The practical value is not that the second model is always smarter. It sees the work from a different angle. That is useful when the original model is overconfident, when the human is tired, or when the task has a high cost of silent failure.

Second Model Review Pattern

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