OpenAI Likely to Make ChatGPT and Codex Share Usage Limits Starting in December

OpenAI appears to be working on a major change to ChatGPT subscriptions, and Codex users may feel the impact. A newly spotted checkout notice suggests both services could share one usage limit starting in December. However, fresh comments from OpenAI staff suggest the broader ChatGPT and Work integration is still being developed.

ChatGPT checkout notice hints at shared usage limits

AI product researcher Tibor Blaho spotted new wording on the ChatGPT web app’s checkout page, which he later shared on X. The notice reads, “Starting in December, plan usage will have a shared limit across all of ChatGPT and Codex.” The screenshot shows a subscription priced at €23 per month, including tax, which appears to correspond to the Plus plan.

The wording suggests OpenAI could expand its existing shared usage system. Its support documentation already explains that Codex, ChatGPT Work, and certain other agentic features share allowances or credits on eligible plans. However, the newly spotted notice appears broader because it explicitly refers to all of ChatGPT and Codex.

OpenAI says ChatGPT and Work integration is still in development

Later, Blaho quoting a reply from ChatGPT and Codex head, Thibault Sottiaux (aka Tibo on X), suggested that the checkout notice could be related to OpenAI’s ongoing work to combine ChatGPT and Work. Sottiaux, in reply to a post from @Angaisb_ on X, said that the team is working on bringing the best capabilities of ChatGPT and Work together.

Tibo also clarified that the integration is not rolling out yet. The plan is to bring both experiences together sometime this year, but the team intends to proceed carefully. This suggests the checkout wording may be connected to broader product changes rather than a fully finalized rollout.

OpenAI has not publicly clarified whether every subscription tier will receive shared ChatGPT and Codex limits. The company has also not explained how usage will be calculated or whether existing allowances will change.

What shared ChatGPT and Codex limits could mean

If implemented, the change could force users to balance regular ChatGPT conversations against their coding workload. Heavy Codex sessions might consume part of the same allowance used for other ChatGPT activities, depending on the final rules.

That could matter most to developers who regularly switch between asking ChatGPT questions and using Codex to write, review, or modify code. Users who rarely use Codex may notice little difference, but the impact will depend on how OpenAI allocates usage across its services. In case you are unaware, user backlash has forced OpenAI to double ChatGPT Pro usage limits.