The author reflects on their experience using AI coding tools, particularly Claude Code and Codex, over the past year. Initially, they believed that the 'smartest' tool would provide the best coding experience. However, they discovered that the real difference lies in how these tools integrate into the developer's workflow. Claude Code stands out for its collaborative approach, effectively managing project context and facilitating discussions about features and architecture. However, maintaining context during long sessions can become a mental burden, leading to a 'token tax' as a freelancer. In contrast, Codex offers strong reasoning abilities, particularly in debugging, allowing it to understand coding problems deeply without the need for extensive explanations. Codex's straightforward, no-nonsense approach makes it ideal for developers focused on execution, while Claude Code is better suited for collaborative brainstorming. Ultimately, the author concludes that workflow efficiency is as important as the tools' capabilities.