At approximately 8:00 p.m. Eastern Time on Wednesday (August 19), OpenAI’s popular artificial intelligence platform ChatGPT experienced a massive global service outage, affecting tens of thousands of users across the United States, Europe, and other regions. During the outage, users were completely unable to log into existing accounts or register new accounts. The web version also displayed abnormalities including failure to load conversation history, a perpetually spinning sidebar, and inability to send messages, sparking widespread discussion across social media.

According to monitoring data from Downdetector, a flood of user reports poured in immediately after the failure occurred. Google Trends data showed that searches for keywords related to “ChatGPT down” surged by more than 3,250%, underscoring the extensive reach of the incident.

When attempting to log in or register, users encountered technical error messages such as “unable to fetch authentication verification keys” or “Bad Gateway.” Some users reported that the ChatGPT sidebar remained stuck in a loading animation state and that messages could not be sent due to “too many concurrent requests” errors.

The scope of the disruption extended beyond ChatGPT’s web interface and login functionality. OpenAI’s code platform Codex also experienced simultaneous error reports. Additionally, the OpenAI API was not spared, with the official status page showing that as many as 12 API endpoints were experiencing execution anomalies.

OpenAI quickly confirmed the anomaly on its official status page (status.openai.com) and began remediation efforts. As of 8:15 p.m. Eastern Time, approximately 14 minutes after the failure began, OpenAI marked the incident status as “identified and still being addressed.”

Fortunately, the outage did not last long. Approximately one hour after the issue began, at 8:54 p.m. Eastern Time, OpenAI officially announced that all affected services had been fully repaired and restored to normal operation.

Service Outage Timeline

Time (ET)Event~8:00 p.m.ChatGPT began experiencing global service outage; login, registration, and conversation loading functions affected8:15 p.m.OpenAI confirmed the issue on its status page, marking it as “identified and still being addressed”8:54 p.m.OpenAI announced all affected services had been fully repaired and restored to normal

Note: Timeline compiled based on OpenAI’s official status page and Downdetector reporting data.

Scope of Impact and User Reactions

The outage affected multiple regions spanning the United States and Europe. Based on user reports on social media platforms, the impacted functions covered core features including account login, new user registration, conversation history retrieval, and message sending. For users who rely on ChatGPT for daily work, software development, or content creation, the nearly hour-long service disruption caused considerable inconvenience.

Notably, since its launch, ChatGPT has become one of the most widely used AI chat services globally, with its service stability directly impacting millions of individual users and enterprise customers. This outage once again highlighted the vulnerability of large-scale AI services under high-concurrency conditions and drew attention to how OpenAI balances infrastructure expansion with system stability.

Industry observers noted that while OpenAI’s response time was remarkably swift—taking only about an hour from problem identification to complete restoration—for an AI company with an extremely high valuation and massive user base, any service interruption could potentially impact user trust. The fact that API services were also affected simultaneously suggests that some enterprise customers’ applications may have been impacted as well.

OpenAI has not yet disclosed the specific technical cause of the outage. The market will be closely watching whether the company subsequently releases a detailed incident report and whether it proposes concrete infrastructure improvement plans in response to this event.