Claude Code vs Codex on Real Codebases
Architectural choices define which agent wins for which task, not which agent wins overall.
Marcus Delgado-Yuen
Staff Writer
Marcus cut his teeth writing open-source tooling roundups for a developer community newsletter and has since built a reputation for deep-dive teardowns of how harnesses handle edge cases, failure modes, and cost overruns. He maintains a public testing rig he refreshes with every major framework release.
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Architectural choices define which agent wins for which task, not which agent wins overall.