Claude is more reliable in production, less errors and better understand
instructions. That's why the valuation shifted, technical people are choosing Claude for actual shipped products.
It’s a known “secret” for a while now how much better Codex is than Claude. I’ve used both since they were released and I often implement in both to compare and 95% of the time Codex writes better code and also less code!
Claude is only really better at front end design.