Introduction to ChatGPT Errors

ChatGPT, a popular AI chatbot, experienced a significant increase in failed conversation attempts due to a misconfigured internal experiment. This issue led to a service degradation, resulting in blank responses for many users. The problem occurred on February 19, 2025, from 9:48 AM to 11:19 AM PT.

What Happened

According to OpenAI, the root cause of the issue was a misconfigured internal experiment that unintentionally triggered a surge in traffic, overwhelming the inference infrastructure. This increase in load led to saturation of compute resources, causing failures in generating responses. The company took immediate action by temporarily shedding load from free-tier users to stabilize the system. As capacity was restored, paid users gradually recovered, and the full service was restored by 11:19 AM PT.

Incident Response

The incident response team at OpenAI noted that they continue to work on changes that will prevent similar outages from happening. They are building better protections around experiment changes and configurations by moving from a uniform approval process to a risk-based model. This will ensure safer rollouts of experiments. Additionally, they are automating notifications for relevant changes and experiments to more quickly identify root causes of increased failures.

Preventing Future Outages

To prevent similar issues in the future, OpenAI is implementing two key changes:

• Stronger safeguards: Building better protections around experiment changes and configurations to ensure safer rollouts of experiments.
• Faster root cause identification: Automating notifications for relevant changes and experiments to more quickly identify root causes of increased failures.

Conclusion

The incident highlights the importance of robust testing and quality assurance in AI systems. OpenAI’s transparency in reporting the issue and their efforts to prevent similar outages in the future are commendable. By learning from this experience, the company can continue to improve the reliability and performance of ChatGPT, providing a better experience for its users. The full incident report can be found on OpenAI’s status page, providing more details on the issue and the company’s response.