28 DAYS · BUILDING IN PUBLIC

Codex 28-Day Challenge

What shipped. What helped.

Tibo promised a useful improvement or a full reset each day for 28 days. Follow the announcements, try the changes, and tell us what actually helped.

Sources checked:
Records verified through Day 2.1. Later announcements may not yet be included.

Day numbers follow the official posts. A missing record is not proof that no update shipped. No daily cutoff was specified.

DAY 2.1Product improvement#

Auto-review is now free

Tibo announced that Auto-review is free for users signed in with ChatGPT and does not draw usage from their plan.

Published: Read the official post ↗

Who is it for?

Codex users signed in with a ChatGPT account.

The free allowance applies to Auto-review, not the entire coding task. It is not a security guarantee.

Try it

  1. Open Codex settings and find Permissions (under General in the desktop app).
  2. Choose Auto-review. A separate agent reviews actions that need permission.
  3. Try a small task and check the outcome before using it for longer work.
Read the Auto-review guide →

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DAY 1Product improvement#

Faster default speed

Tibo announced roughly 50% faster default speed for GPT-6 Astra and GPT-6.1 Sol through subscriptions, including partners using Sign in With ChatGPT.

Published: Read the official post ↗

Who is it for?

Subscribers using the named models in OpenAI products and supported Sign in With ChatGPT partners.

The speed figure is an official claim, not our benchmark. This update is not a confirmed quota reset.

Try it

  1. Keep using your existing subscription and selected model; the announcement says no settings change is needed.
  2. Try a familiar task and compare your own experience.

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Updates and resets are different

An improvement does not refill your account. This page records challenge announcements; the reset tracker records sourced quota resets. Check your account’s Usage panel for your personal reset time.

How this record works

We manually check the linked official posts and preserve their day numbers, including subdays such as 2.1. Community feedback never changes the classification of an announcement. Check times apply to the sources we reviewed, not a guarantee of complete coverage.

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