The 5h quota of Codex Pro on GPT 5.4 Medium lasts me for around an hour and a half, maybe 2 hours.
And this is already the "savy" setup. Enable GPT 5.5 High fast and you will be beached in 30 minutes with active development.
For continues all day work you definitely need a higher tier sub level.
I'm actually looking into deploying a GPU at my company because we can not give out our code.
Qwen 3.6 looks good