Tibo Sottiaux, head of OpenAI Codex, stated that internal dashboards indicate Codex may reach a new milestone tomorrow, reminding users to "keep their Codex safe."

The statement did not disclose specific metrics for the milestone, making it impossible to confirm its relation to active user numbers, task execution volume, code generation volume, paid subscription numbers, revenue, model invocation volume, or product usage duration.

Sottiaux previously revealed that during the unified statistics period for Codex and ChatGPT Work, the two products collectively gained 1 million active users; OpenAI celebrated this milestone by resetting users' weekly usage limits multiple times in advance.

Currently, ChatGPT Plus users share usage limits for Codex and ChatGPT Work: in addition to the weekly limit, a 5-hour usage window restriction has been reinstated; users must wait for limits to refresh or purchase additional credits after reaching either limit.

OpenAI has not yet reinstated the 5-hour limit for the $100 and $200 Pro subscriptions, planning to maintain a more lenient usage arrangement for this tier in the coming months. The tiered limits mean that the growth of Codex users and control of inference costs are directly tied to subscription conversion, limit management, and sales of additional credits.

From a market mechanism perspective, if the new milestone corresponds to an increase in active users or task volume, the primary beneficiaries will be OpenAI's subscription revenue, usage-based billing revenue, and developer ecosystem; however, high-frequency code generation and agent execution will also simultaneously drive up GPU inference, context processing, and tool invocation costs. Plus users are constrained by the usage window, while Pro users retain greater usage freedom, allowing OpenAI to shift high computing demand from a unified subsidy to tiered pricing and paid expansion, with power suppliers, cloud service providers, and data center operators bearing the ongoing increase in infrastructure spending.

Source: Public Information