It may be a configuration thing. I've found quite the opposite. Github Copilot using Sonnet 4 will not manage context very well, quite frequently resorting to running terminal commands to search for code even when I gave it the exact file it's looking for in the copilot context. Claude code, for me, is usually much smarter when it comes to reading code and then applying changes across a lot of files. I also have it integrated into the IDE so it can make visual changes in the editor similar to GitHub Copilot.

I do agree with you, Github Copilot uses more tokens like you mentioned with redundant searches. But at the end of the day, it solves the problem. Not sure if the cost out weights the benefit though compared to Claude Claude. Going to try Claude Code more and see if I'm prompting it incorrectly.