You mean GPT-5.3-Codex is a much better value than Claude Opus for programming ? If yes then I'm very interested as I am using Claude there

I guess it depends on your spending. GPT-5.2 and -5.3-Codex are certainly much cheaper: you get much more from the same $20 sub. When I was using Claude as primary I would daily hit limits and have to wait vs on GPT with more usage it only happened to me once in a few months when I was vibecoding non-stop for a week or two to port my personal Windows tools to Linux with multiple other projects being worked on in parallel.

Anecdotally GPT was also smarter than Claude which prompted my move from Claude in the first place: Gemini and Claude back in October failed to get their own harness PID.

Outside of anecdata I rely on https://artificialanalysis.ai/models/capabilities/coding for now.