ChatGPT is currently experiencing an outage affecting some users, as confirmed by OpenAI. The issue stems from an "upstream provider," and there is no estimated time for resolution. Alongside ChatGPT, the OpenAI API and Sora video platform are also down. This marks the second outage in December, occurring on the same day Apple launched iOS 18.2 with integrated GPT in Siri. Users are encouraged to share their experiences.