Where do we stand with Claude 20x Max vs. Codex Pro after Opus 1M context window

Has anyone tried the latest and greatest models of both camps, with the highest thinking level and maximum possible context window setting, and compared performances and observed patterns / specific behaviors which make you choose one over the other? [Of course, everyone's mileage varies, but still want to gather insights from folks who have the privilege to be able to use both extensively]

I'm talking about $200 versions of both.

I couldn't find any such detail over the web for the *present best* versions of both camps, and my current usage / repository is too narrow to provide me with meaningful comparison unless I try sending each task to both at the same time. Any inputs would be greatly appreciated, thank you!