Harness Hub
All people

Thibault Sottiaux (Tibo)

Codex, OpenAI

Engineering lead on OpenAI Codex. His Aug 2026 post "Codex is a good harness. But it will seem primitive in 2-3 months" was one of the most-viewed harness posts of the year.

On X

Shown as plain text; “Load on X” loads X's script for that post, which may set cookies.

  • We are aware that codex is down and are working hard to bring back normal service.

    Open on X

  • For clarity, while both are called 20X, in Codex they apply specifically to weekly usage limits. And we also don't have 5h limits for both Pro plans.

    The Pro 20X is quite precisely 20X the usage of the Plus subscription, so it does exactly what it says on the tin. https://t.co/vMchMCT80Z

    Open on X

  • Your Codex and ChatGPT Work reset will land at 6pm PST.

    I challenge you to burn as much usage as you can and discover and the latest awesome features.

    Time to go /fast

    Open on X

  • It's me again. I come bearing great news.

    First of all, we have hit 20M active users for Codex some time this week. Second of all, this is cause for celebration and during the day we will credit every Codex and ChatGPT Work user with a BANKED reset that you can use at your own… https://t.co/mooGnI0KJO

    Open on X

  • We have reset usage limits for all Codex and ChatGPT Work users.

    Last night around 2am to 4am we suffered an almost global outage. All well and recovered, but you know what comes next.

    We learn. We reset. Enjoy. https://t.co/rAPzefTyaa

    Open on X

More on the X feed

Quoted in the State of Harness report

Also at

Codex: Alexander Embiricos

Sources

  1. github.com/thsottiaux
  2. x.com/thsottiaux/status/2084483765158719542