Claude also doesn't let you use a worse model after you reach your usage limits, which is a bit hard to swallow when you're paying for the service.
I suspect that tells us less about model capability/efficiency and more about each company's current need to paint a specific picture for investors re: revenue, operating costs, capital requirements, cash on hand, growth rate, retention, margins etc. And those needs can change at any moment.
Use whatever works best for your particular needs today, but expect the relative performance and value between leaders to shift frequently.
My guess is that it's potentially that and just momentum from developers who started using CC when it was far superior to Codex has allowed it to become so much more popular. Potentially, it's might be that, as it's more autonomous, it's better for true vibe-coding and it's more popular with the Twitter/LinkedIn wantrepreneur crew which meant it gets a lot of publicity which increases adoption quicker.
Are you feeling the benefits of the switch? What prompted you to change?
I've been running cursor with my own workflows (where planning is definitely a key step) and it's been great. However, the feeling of missing out, coupled with the fact I am a paying ChatGPT customer, got me to try codex. It hasn't really clicked in what way this is better, as so far it really hasn't been.
I have this feeling that supposedly you can give these tools a bit more of a hands-off approach so maybe I just haven't really done that yet. Haven't fiddled with worktrees or anything else yet either.
I just.. can't tell a different in quality between them.. so I go for the cheapest