Claude Code completely destroys ChatGPT for programming. I had this same kind of discussion with a bunch of my programmers at the beginning. They were using all kinds of AI products (other than Claude Code) and I basically had to force them all to switch. But they've all seen the results now.
I think you have not used Codex CLI recently, it has almost all the instrumentation that Claude Code does. (skills, MCP etc.)
You should give using both a go, hell give your Claude Code, Codex CLI agents. You'll see what I mean.
These things advance so fast that it's hard to keep track of everything.