Ddos 
ChatGPT enforces stringent usage quotas to conserve operational costs and prevent misuse. Even paid subscribers are subject to these limits; once a user exceeds their allotted quota based on subscription tier, they are unable to continue conversing with ChatGPT for the remainder of that day.
This week, OpenAI revised the usage quotas for ChatGPT Plus subscribers, modestly increasing the allocation across different models. As a result of this update, users can now engage in more daily interactions with ChatGPT without triggering quota restrictions.
The updated limits are as follows:
- o3 model: 100 messages per week
- o4-mini model: 300 messages per day
- o4-mini-high model: 100 messages per day
These quotas reflect the relative intelligence and performance characteristics of each model. The GPT-o3 model, being more advanced in reasoning and capability, receives a more restrictive quota. In contrast, models like o4-mini offer faster response times with lower reasoning complexity, warranting more generous usage limits. The o4-mini-high model, while less intelligent, is among the fastest in response, thus assigned a slightly lower quota than o4-mini.
In essence, the new configuration doubles the previous quotas for both o3 and o4-mini models. However, these expanded limits apply exclusively to ChatGPT Plus users who pay $20/month. Free-tier users continue to face lower usage thresholds.
At present, OpenAI has not provided users with a tool to track their remaining message quotas per model. Instead, quota exhaustion is only revealed when users encounter a restriction message from ChatGPT. Once this limit is triggered, users must wait until the next day—or the following week, in the case of weekly quotas—to resume access.
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