ChatGPT and Codex share one limit: token-based allowance for Plus, Pro and Business from December
What is it?
Starting in December, Plus, Pro and Business plans will draw ChatGPT and Codex from one usage allowance. The change comes as OpenAI folds the agentic features of Work into the main ChatGPT experience. Usage will be counted in tokens, the units a model reads and writes, so how fast you burn through it depends on the model and the task. Instant chat won't count, and the combined balance and reset times will show in Settings → Usage.
Why does it matter?
Today heavy Codex use leaves your ChatGPT allowance alone. From December, using one cuts into the other. Developers and teams who lean on Codex should measure now how much the heavier models and long tasks consume. Once you hit the limit, your only options are to wait, upgrade or buy credits.
Maturity
PreviewRated preview because this is an announcement in a help article. There's no exact start date, no per-plan token amount, and no new five-hour or weekly figures yet.
How to track it
- Dates and numbers: watch the help article and the Codex pricing page for the exact start date and per-plan token amounts.
- Scope: check whether Enterprise and Edu plans move to the same model.
- Real-world impact: follow the Codex lead on X (@thsottiaux) and the community for how quickly limits drain in the first week of December.