ChatGPT and Codex will draw from one usage allowance on Plus, Pro and Business plans, and that usage will be counted in tokens. OpenAI's help center says: "Starting in December, Plus, Pro, and Business plans’ usage allowance will be shared across ChatGPT and Codex as we bring the agentic capabilities of Work into the main ChatGPT experience."

The help page gives no exact date and no per-plan allowance sizes or token numbers. TechCrunch reported the same change from an OpenAI email to users: "OpenAI also said with this transition, both ChatGPT and Codex will draw tokens from the same allowance pool."

#What changes?

One pool. On Plus, Pro and Business, usage in ChatGPT and in Codex will come from the same allowance, per the help page.

Tokens. "Your usage for ChatGPT and Codex will be measured in tokens, the units of information a model processes and generates," OpenAI says.

Cost depends on the work. "How much of your allowance you use will depend on the model you choose and the task you ask it to do." OpenAI adds: "More advanced models and complex tasks generally use more of your allowance."

Instant chat is exempt. "Instant chat will not draw from your usage." The help page does not say which models or modes count as Instant chat.

One usage view. "You will be able to see your combined remaining usage and reset times in Settings → Usage."

At the limit. "If you reach your limit, you can wait for it to reset, upgrade your plan, or buy credits to continue using eligible features."

#How do limits work as of November 2, 2026?

OpenAI's Work and Codex usage page describes the arrangement as of November 2, 2026: "Work and Codex share the usage allowance included with your plan." Chat sits outside that pool: "Chat has its own model availability and message limits." The same page says "Your allowance does not correspond to a fixed number of messages or tasks."

So Work and Codex already share an allowance. The change described on the new help page adds ChatGPT itself to that shared pool.

#Will users hit limits more often?

OpenAI says it does not expect so for most people: "We expect most users won't need to wait for their usage to reset more often than they do now." It adds: "We’re preparing carefully for this transition to help prevent disruption to your workflows."

TechCrunch's report of the email puts it slightly differently: "It said this change won’t impact most users, but based on usage and model, some folks might need to wait for resets more frequently."

#What about the Chat and Work tabs?

OpenAI told users in an email that it plans to merge the Chat and Work tabs in ChatGPT, TechCrunch reported: "OpenAI is now gearing up to merge the Chat and Work tabs within the ChatGPT experience, according to an email sent to users."

According to TechCrunch's report, the email said the merged experience comes first to a limited group: "OpenAI said that initially, this experience will be available to select users for feedback before it is rolled out widely." TechCrunch gives no date for the tab merge.

TechCrunch quoted the email on what the merged experience is for: "This will enable you to move from exploring an idea to having ChatGPT carry it through, all in one place."

Codex is not part of that merge, per the email as TechCrunch reported it: "Codex will remain a separate experience in the ChatGPT desktop app,” the email said. Codex would stay its own section of the app while its usage draws from the same allowance as ChatGPT.

For OpenAI's last change to these allowances, see OpenAI cancels the Pro 200 cut and doubles Pro Work and Codex allowances. For a rival's plan-limit change, see Claude Max and Ultra and the 5-hour limit.

Our analysis: A single token pool is simpler to read than separate Chat, Work and Codex limits, but it also means heavy Codex use can eat into everyday ChatGPT use on the same plan. Without per-plan sizes, Plus, Pro and Business users cannot compare the new pool with their existing limits. The exemption for Instant chat is the key detail for light users, and OpenAI has not defined it. The combined view in Settings → Usage will be the first place to see how the change lands.

#What is unclear?

  • Start date. OpenAI's help page says "Starting in December" and gives no day.
  • Allowance sizes. No per-plan token numbers are published.
  • Instant chat. Which models or modes it covers.
  • Tab merge timing. When select users, and then everyone, get the merged Chat and Work experience.
  • Other plans. The help page names only Plus, Pro and Business.