I believe customer support should actually be done by humans, as customers feel undervalued when they talk to scrappy voice agents, atleast make an effort to use good ones, so it tries to speak like humans
I just recently shifted to codex since i got frustrated with the token usage which did not allow me to get my work done.
Here's my honest opinion i think with the right configs codex does a very good job, like cc is better in terms of quality of code generated but codex seems to understand everything way better, and you can improve your code quality if just read through it once.
I just shipped a causal memory system for AI agents and am now working on the mcp for claude code.
It's open source u can check it out on: https://github.com/CausalOS/causalos-python