I’ve been using Claude to refine the UI copy that Codex initially laid the groundwork for, and it works remarkably well. Expressions that sounded unnatural in Japanese quickly become much more casual and conversational. Sometimes, the results even feel more natural than something written entirely by a human.
For example, in an app I recently built, most apps would probably use words like “Sign up” or “Join” in the login and registration flow. Claude instead used the heading “New here?”
Once you notice it, there’s something refreshingly relaxed about that phrasing. It doesn’t feel intimidating or overly formal.