Quick question about Codex resets — 5‑hour limit or weekly limit?

I’m trying to understand how Codex resets actually work so I don’t accidentally waste them.

Some people say it’s a 5‑hour rolling limit, others say it’s a weekly quota, and I can’t find anything official that clearly explains it. When you hit the cap, is it supposed to reset after a few hours, or only once per week?

If anyone has tested this recently or has a definitive explanation, I’d really appreciate it. Just trying to plan my usage so I don’t burn through resets unnecessarily.