Codex vs Claude Code: Which AI Coding Assistant Reigns Supreme in 2025?

AI Coding Assistants Showdown: Codex vs Claude Code in Practical Development Scenarios Core Question Addressed in This Article What are the key strengths of Codex (GPT-5 High) and Claude Code (Claude Opus 4.1) for modern development workflows, and how should technical teams choose between them for specific projects? In today’s software development landscape where complex projects and rapid iteration demands coexist, AI coding assistants have become indispensable tools. However, not all AI assistants deliver the same performance in real-world applications. This article presents a comprehensive comparison of Codex and Claude Code through identical practical tasks, analyzing their capabilities across user …