📝 Claude Code vs. Codex: The Definitive Guide I've used Claude Code for months, then moved to Codex. I just switched back to Claude and the reason has nothing to do with benchmarks. I also tested both on the same task. In this article: I will discuss the different aspects of Claude Code and Codex, the difference between the two flagship models powering them Opus 4.6 vs. GPT-5.3-Codex, what really changes your AI coding experience, and discuss a small case study where I have used both of…