When Coding Tools Compete: Claude Code vs. Codex (Real Usage After 2 Months)

After two months of daily use with both Claude Code and OpenAI Codex, the differences are clear. Claude Code excels at autonomous multi-file tasks, understanding project context, and working as an agent. Codex is faster for single-file completions and inline suggestions. The architecture difference matters: Claude Code is a CLI agent that reads your entire project, while Codex is an IDE extension that works line-by-line. For autonomous development (night shifts, batch operations, multi-step refactors), Claude Code wins decisively. For fast interactive coding, Codex is still faster. Most teams should use both.