GPT-5.2 and GPT-5.3-Codex have been sunset in Codex with ChatGPT subscriptions

exactly, It is still available in Cursor and others. And that is what I was saying I was doing / using. Using codex 5.3 in Cursor for some things, since I have a high plan paid for on that, and then working in Codex with 5.5 for all else (same project) since I have yet to hit any limits with it. For me this has been working fine.