Tibo's 28-Day Codex Challenge

A public scoreboard for the commitment to ship one clear Codex improvement — or a full reset — every day from Oct 5 to Nov 1, 2026 (Pacific Time).

28-Day Challenge Active
7 / 28 Days Recorded
9 Improvements 4 Full Resets Day 9 in progress
Tibo's Time --:-- PT · California

The promise

“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.”
Tibo (@thsottiaux) · Announcement post ↗

Recorded results

Day 5Oct 9 · 1 item
Improvement

Composer predictions in the Codex desktop app

Now available in beta for Pro users, composer predictions suggest your next message based on your conversation and how you communicate with Codex. The feature does not consume plan usage.

Day 4Oct 8 · 1 item
Improvement

Instant steering and GPT-6.1 Sol ultrafast

Steering now responds instantly to user adjustments for real-time course correction. GPT-6.1 Sol ultrafast is also rolling out in the API, Codex, and ChatGPT Work.

Day 3Oct 7 · 3 items
Reset

A banked reset for everyone

“Confirmed landed across all accounts. How are we doing so far?”

Improvement

Codex Cloud connects through Tailscale

Codex Cloud can now securely connect to resources on your tailnet using Tailscale.

Improvement

GPT-6 update with Intelligent UI

A new GPT-6 version and Intelligent UI are rolling out to everyone in ChatGPT, adding visual, interactive answers and tools for users' tasks.

Day 2Oct 6 · 5 items
Reset

Usage limits reset for everyone

Four improvements shipped (plus some math proofs), but the community vote was clear: a reset.

Improvement

Decisions API is live in public beta

Developers can use the Decisions API to pick a model, tool, or action in near real time. It is available to all developers in public beta and decides up to 10x faster than GPT-6 Luna through the Responses API.

Improvement

Meetings plugin saves notes and next steps

The Meetings plugin takes notes and saves a personalized summary and next steps in ChatGPT Space. It is in beta for Pro and Business users in the ChatGPT desktop app on macOS.

Improvement

Easier qualification for higher API rate limits

Paid OpenAI API usage tiers go from five to three: Build, Launch, and Grow. Grow, the new highest tier, now qualifies with $500 in total API payments, down from $1,000.

Improvement

Free Auto-review for all ChatGPT-signed-in users

Auto-review is now free for all users signed in through a ChatGPT account. Enable it in permission settings to have a second agent review actions during long tasks, without drawing usage from your plan.

Day 1Oct 5 · 1 item
Improvement

About 50% faster default speed for GPT-6 Astra and GPT-6.1 Sol

Default speed has been optimized across subscription products and partners using Sign in With ChatGPT. The improvement is rolling out within two hours, with no user action needed.

Daily log

01Oct 502Oct 603Oct 704Oct 805Oct 906Oct 10
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27Oct 31
28Nov 1
Reset Improvement Today Unconfirmed / ahead

Days follow Tibo's time (Pacific Time). Last checked: 2026-10-13 20:50 UTC.

DayDateResultDetail
Day 1Oct 5ImprovementAbout 50% faster default speed for GPT-6 Astra and GPT-6.1 Sol
Day 2Oct 6ResetUsage limits reset for everyone
Day 3Oct 7ResetA banked reset for everyone
Day 4Oct 8ImprovementInstant steering and GPT-6.1 Sol ultrafast
Day 5Oct 9ImprovementComposer predictions in the Codex desktop app
Day 6Oct 10ResetFull reset
Day 7Oct 11UnconfirmedNo confirmed result
Day 8Oct 12ResetFull reset
Day 9Oct 13TodayToday — no result yet
Day 10Oct 14AheadAhead
Day 11Oct 15AheadAhead
Day 12Oct 16AheadAhead
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Day 26Oct 30AheadAhead
Day 27Oct 31AheadAhead
Day 28Nov 1AheadAhead

Seen but not counted

About this record

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Codex usage & reset guides

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Codex HubUsage LimitUsage LimitsWeekly Limit5-Hour LimitReset TimeUsage TrackerLimit ReachedBanked ResetReset Not WorkingLive StatusReset HistoryPlus LimitPro LimitWork LimitLimit IncreaseUsage CheckReset AlertsiPhone AppWidget

Also see Claude Code, ChatGPT, and Cursor guides.

Data from @thsottiaux's tweets, classified by a robot that takes this very seriously. Not affiliated with OpenAI.