ChatGPT Service Disruption on April 20, 2026
A significant disruption to ChatGPT's service occurred on April 20, 2026, beginning around 5:00 PM Kyiv time. Users began actively reporting issues affecting both the web version and OpenAI's official mobile applications. According to Downdetector, the number of outage complaints surged dramatically within the last hour. This incident highlights the vast scale of the system, which is used weekly by over 300 million people and processes more than a billion queries daily.
OpenAI's Response and User Impact
The precise cause of the outage remains unknown, and OpenAI has not yet provided a detailed explanation for the incident. Similar service problems have occurred previously, including in February and December, among other months in 2025–2026. In response to the situation, OpenAI has updated its Terms of Use to restrict the provision of personalized medical and legal advice. The system will now only offer general reference information and will direct users to consult qualified professionals in these fields.
This incident underscores the critical importance of reliable performance for such technologies, as a vast number of people depend on ChatGPT for information and support across various domains. OpenAI's decision to limit specific types of advice is likely to affect the experience of users who rely on the platform for consultations in medical and legal matters.
Such recurring service issues can raise concerns among users who depend on the platform's reliability and availability for important tasks. It is crucial for the company to swiftly address the root causes of these outages and ensure future stability to maintain user trust. This move reflects a broader industry trend of AI companies establishing clearer boundaries for their tools' use cases.