Over the next 28 days, each day we’ll either ship one thing that is a clear improvement and relevant for most codex/work users or ship a full reset. Let the improvements begin.
Codex 28-Day
Challenge
Day 5 of 28
October 5 – November 1, 2026
The 28 days of the Codex challenge
- 9 improvements
- 2 resets
About the challenge
What is the Codex 28-Day Challenge?
On October 4, Tibo announced a pledge to ship a clear Codex improvement or a full reset each day for 28 days. This calendar tracks his published improvements and public Codex reset announcements during the challenge, with links to the original sources.
What do the totals count?
Improvements count each published improvement. Resets count each distinct announcement in the Reset Almanac on its original Pacific date, including days with improvements. Later arrival updates do not add another reset. Planned, postponed, and cancelled resets retain their announcement count; the day details show current availability. An improvement being rechecked keeps its count until the review is complete.
When does it run?
October 5 through November 1, 2026, inclusive. All calendar days and update times use Pacific time, including the November daylight saving change. This page will remain available as an archive.
What does “Awaiting confirmation” mean?
No update has been confirmed and published here for that day yet. It does not mean the pledge was broken. Announcements may be rolling out, postponed, or cancelled; the day details show each update’s status.
Will reset alerts include every daily improvement?
No. Reset Alerts follows Codex reset announcements. The daily improvements are tracked on this page.