OpenAI announced it will consolidate ChatGPT and Codex onto a single shared token allowance for Plus, Pro, and Business plan subscribers starting in December, replacing the current per-model message cap system.
The change is tied to OpenAI moving the agentic features of ChatGPT Work, its July agent built on Codex, into the main ChatGPT product. A second report confirmed the December timeline and noted that Instant chats will not count against the shared limit.