ChatGPT, Claude, and Grok recovered after simultaneous service disruptions; Grok identified its Memphis compute center as the cause.

ChatGPT, Anthropic’s Claude, and SpaceXAI’s Grok experienced service disruptions at approximately the same time on September 3 and subsequently reported recovery through their status pages. Downdetector also reported problems involving Cursor, although the digest item concerns the three major model services.

Users began reporting Grok and Claude problems around 9:00 a.m. U.S. Eastern time, while OpenAI issues were reported at around 10:30 a.m. Eastern time. Claude displayed an unexpected-capacity-limit message, and Grok reported that its model or some functions were temporarily unavailable.

During recovery, Anthropic said multiple models had returned to baseline while Opus 4.8 and Opus 5 remained affected. A later report stated that all three services had resolved their incidents.

SpaceXAI specifically attributed Grok’s problems to an outage at its Memphis compute center and said all systems had been fully restored. The supplied sources did not establish a common cause connecting the three companies’ disruptions.