OpenAI recently announced a 28-day reset challenge: each day, either a "clear improvement" or a usage reset.

I built this calendar to track the challenge. It updates throughout the day as updates become available.

The site also has every reset since April 2025 backfilled, along with a "percent on time" chart similar to airline flights.

This is part of a new project called ResetAlerts, which sends alerts about the latest Codex resets. Open to any thoughts, feedback, or features you want to see.