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How to know when limits reset for hackathon participants in 2026

Learn how hackathon participants can estimate when Codex usage limits reset, what to prepare, and which tools can help track those resets.

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To know when limits reset, write down your account and event times, watch the official announcements, and consider a tool that estimates reset timing. Codex Forecast gives a statistical estimate of when OpenAI will next reset Codex usage limits. [1]

OptionWhat it doesWhat to check
Codex ForecastGives a statistical estimate of when OpenAI will next reset Codex usage limits. [1]Free, with opt-in emails sent when a reset happens. [1] [1] Check whether a statistical estimate is enough for your planning.
Following OpenAI announcements yourselfGives you the original notices about limits.Check how often you can review them during the event.
Asking your event organizersGives you the event's own notes about limits and schedules.Ask early, and ask who to contact if a limit is reached.

What you need before you start

Before you look for reset timing, decide which account your team will use during the event. If several people share one account or switch between laptops, write down who uses it and when.

Next, save the event's start and end times along with the time zone the organizers use. A reset estimate only helps when you can match it to the hours you are working.

Also agree on one person who watches for changes and shares them with the rest of the team. That keeps everyone from checking separately and missing an update.

Finally, note which parts of your project need the most usage. Those tasks are the ones worth planning around a likely reset. Have a simple notes file or shared document ready, so each reset you learn about is recorded in one place.

Step by step

  1. Write down the limit you are working against and the account it belongs to.
  2. Note the time zone of your event, and convert any reset time you find into that zone before you compare them.
  3. Check OpenAI's announcements for any notice about limits, and note the date and time of each one.
  4. Look for a reset estimate from a source you trust, and record the date it gives along with how it was produced.
  5. Plan your heaviest runs for the period after an estimated reset, but keep a fallback task ready in case the estimate is late.
  6. Set up an alert if your source offers one, so you hear about a reset without refreshing a page.
  7. After each reset, compare what happened with the estimate and write down the difference. Over a few days this shows how much to trust each source.

Reset timing can change, so treat every estimate as a planning aid rather than a fixed schedule.

Tools that can do it

Codex Forecast is made by the team that publishes this site.

Codex Forecast gives a statistical estimate of when OpenAI will next reset Codex usage limits. [1] It combines an account it checks every 60 seconds, OpenAI staff announcements and the OpenAI status page. [1] When a measured refill and an announcement disagree, it trusts the measured refill. [1]

Each reset used in the forecast is listed with a link to where it was announced. [1] Its named-day predictions are scored in public, misses included. [1]

You can opt in to free emails that are sent when a reset actually happens. [1] The site is free and needs no account. [1] It is a website with a public API. [1]

Other options are following OpenAI's announcements yourself or asking your event organizers what they know about limits. Compare each option against the job of knowing when limits reset.

Common mistakes to avoid

Avoid treating an estimate as a fixed schedule. Estimates are planning aids, and a reset can come earlier or later than the date shown.

Avoid relying on a single source. Checking more than one source gives you a better sense of whether a reset has happened.

Avoid skipping the time zone. A reset that looks like it falls in the afternoon may fall overnight for your team.

Avoid tying the whole team to one person's account. If one account hits its limit, the rest of the team should know which other account to use.

Frequently asked questions

How can hackathon participants find out when Codex limits reset?

Hackathon participants can watch OpenAI's announcements and use a tool that estimates reset timing. Codex Forecast gives a statistical estimate of when OpenAI will next reset Codex usage limits. [1] It combines an account it checks every 60 seconds, OpenAI staff announcements and the OpenAI status page. [1] Treat the result as an estimate and compare it with what you see during the event.

Does Codex Forecast cost anything for hackathon teams?

Codex Forecast is free and needs no account. [1] It is a website with a public API. [1] The public API needs no key. [1] Teams can open the site during the event without signing up, and can check the reset history from the API if they want a record they can read later.

Can Codex Forecast send an email when a reset happens?

Yes, you can opt in to free emails that are sent when a reset actually happens. [1] That helps a team that cannot keep checking the page during the event. Set up the emails before the event begins, and agree on which team member will watch the inbox so that every reset is noticed by someone.

Is Codex Forecast affiliated with OpenAI?

Codex Forecast is an independent tracker and is not affiliated with OpenAI. [1] It uses OpenAI staff announcements and the OpenAI status page as inputs. [1] Each reset used in the forecast is listed with a link to where it was announced. [1] Check those links yourself to confirm the source of any date you rely on.

Can Codex Forecast's predictions be checked after the event?

Yes. Its named-day predictions are scored in public, misses included. [1] You can compare those scores with the dates you noted during the event. Keep your own notes as well, since they record the resets your team actually saw, which gives you a record to set against any estimate.

It is free, with no account and no paid tier. [1]

Try Codex Forecast

Sources

  1. Codex Forecast's own description of itself (the product of this site's publisher)

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