Observations from Using Claude Code (ternarysearch.blogspot.com)

In a recent blog post celebrating the 12-year anniversary of his writing, the author shared insights from using Claude Code (CC) with Opus 4.5 during a personal project, kfchess. By reversing traditional coding roles and allowing CC to drive the development process, the author experienced significant improvements in productivity. They noted that CC effectively set up the project, handled local environment configurations, and facilitated quick iterations on project planning and implementation, all of which were previously cumbersome tasks. The ability to break down large changes into manageable phases and automate decision-making led to a streamlined development process. The observations emphasized the importance of planning and review when using AI tools like CC, revealing that thorough preparation and subagent reviews significantly enhance code quality. The author found that CC's initial implementation often required validation, as it sometimes lacked the "thinking" needed for complex tasks. However, the enhanced testing capabilities provided by CC led to a more maintainable codebase, allowing the author to focus on larger project objectives. Overall, the results indicated a remarkable increase in development speed—by 3 to 5 times—highlighting the transformative potential of AI in software engineering.