When I use Claude Code and Codex for development, I've had some similar experiences. Claude Code always completes tasks very quickly, but leaves behind a mess that makes me anxious. Codex, on the other hand, is always slow—it slowly reads through the entire project's code, then makes changes very cautiously, testing and verifying after every small modification, and even calls codex review --uncommitted once more before committing.

At first, I found writing code with Claude Code to be enjoyable, while Codex seemed boring. But over time, I've discovered that I actually prefer Codex. Perhaps slowing down really is the key to writing high-quality code.