ChatGPT and Codex usage limits merging (help.openai.com)

Starting in December, OpenAI will merge the usage limits for its ChatGPT and Codex products for users subscribed to the Plus, Pro, and Business plans. This change means that the total allowance will now be shared across both platforms, measured in tokens—the units used for processing and generating information. The integration aims to enhance user experience by streamlining access to advanced features, as the more sophisticated models and complex tasks will consume a greater portion of the shared allowance. Notably, standard instant chat interactions will not impact this usage quota. This significant update reflects OpenAI's effort to enhance the agentic capabilities of the ChatGPT experience, optimizing how users interact with AI for various tasks. Users can easily monitor their combined usage and reset times through the settings interface, ensuring transparency and helping to minimize workflow disruptions. If users exceed their limits, they can choose to wait for a reset, upgrade their subscription, or purchase additional credits, providing flexibility for continued access to AI tools.