Several users have reported that ChatGPT, an AI language model developed by OpenAI, has been experiencing downtime. Complaints about the service being unresponsive began surfacing on September 29, 2024, and continued into the following day. Users have taken to social media to express their frustrations, tagging OpenAI and its CEO, Sam Altman, in their posts. Some users noted that the issues started yesterday. The cause of the service disruption remains unclear.