Codex with a ChatGPT plan has a five-hour limit and a weekly limit, each with its own reset time. To see them:
/status in an active session. It shows the five-hour and weekly limits with their reset times.Lunavect is a free, open-source menu bar app for Codex and Claude Code. After you connect Codex, it asks the official Codex app or CLI on your Mac for the current rate limits; sign-in stays with Codex.

Download Lunavect · Installation · Connections
Does Lunavect need an OpenAI API key? No. It uses the official Codex client that is already signed in on your Mac.
Why is a Codex limit shown as unavailable? Lunavect shows only fresh values from the client. If Codex is not running or cannot answer, the value is marked as unavailable instead of guessed. See connections.
Can I use only Codex? Yes. Connect Codex, Claude Code or both.