Cross-Model LLM Code Review: Should you use Claude to review Codex or vice versa?
Developers increasingly use two coding agents together: one writes a draft, and the other reviews it. However, it is not clear whether the pairing is worth its cost and time, or whether the order of the pairing matters. We run a controlled experiment on 116 recent hard and medium lcb tasks with Claude and Codex across six conditions to approximate a software practitioner's workflow: both solo baselines, both cross-model orderings, and both same-model orderings. The reviewer sees the problem and the writer's draft but cannot execute tests, which approximates a code review step. Claude review raises Codex drafts from 71.6% to 89.7% ($p_{BH}=.001$); Codex self review raises them to 84.5% ($p...
| Authors | Zuodong Xiang, Yike Zhang, YueMing Zhang et al. |
|---|---|
| Primary category | cs.SE |
| Published | 22 July 2026 |
| Last updated at source | 22 July 2026 |
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