OpenAI announced that starting from August 25, it will reimpose a five-hour usage limit on the ChatGPT Work and Codex features for ChatGPT Plus subscribers. Once users reach the limit within a five-hour period, they must wait for the quota to reset before continuing to use the remaining weekly allowance. Previously, this restriction was lifted following the release of GPT-5.6. The current adjustment aims to manage computational resources more efficiently and assist users in planning their usage. Currently, ChatGPT Pro users are unaffected by this restriction, but similar mechanisms may be extended to this user group in the coming months.