OpenAI Sets Shared ChatGPT and Codex Usage Allowance for December

OpenAI will move Plus, Pro, and Business subscribers to a single usage allowance shared across ChatGPT and Codex starting in December 2026, according to a notice published on the company’s Help Center. Instant chat will not draw from the shared pool. Under the new structure, usage for ChatGPT and Codex will be measured in tokens, the units of information a model processes and generates.

OpenAI said how much of the allowance a subscriber consumes will depend on the model chosen and the task requested, with more advanced models and more complex tasks generally using more of it. The company framed the change as part of bringing the agentic capabilities of Work — its ChatGPT experience built for longer research and deliverable tasks — into the main ChatGPT experience.

Once the change is in effect, subscribers will be able to see combined remaining usage and reset times under Settings → Usage. Users who reach the limit will be able to wait for it to reset, upgrade their plan, or buy credits to continue using eligible features, according to the notice. OpenAI…