ChatGPT, Grok, Claude, Cursor all experienced sudden failures
2026-09-03 23:07Models🔥 42.2 heat score
1sources
1days unfolding
42.2heat score
7mentions
SummaryAI generated
On the evening of September 3, 2026, service interruptions occurred simultaneously on multiple global mainstream artificial intelligence and development tool platforms. According to Downdetector statistics, over 12,000 American users reported issues with OpenAI-related services (including ChatGPT and Codex). Approximately 1,200 people reported errors with Claude, and around 1,000 people reported that Grok was unavailable. Several manufacturers have confirmed the faults and started responses: OpenAI stated that ChatGPT and Codex were affected; Anthropic announced that it was investigating the Claude errors and would work to fix them; SpaceXAI confirmed that Grok services were interrupted and began to investigate the cause. Currently, when users attempt to access Codex, they also encounter the “404 Not Found” error, and all platforms are in a faulty state.
According to feedback from netizens, on September 3, several AI models such as ChatGPT, Grok, Claude, and Cursor experienced sudden failures tonight. Users also encountered the “404 Not Found” error when requesting Codex. IT Home investigated Downdetector reports and found that American users faced issues using OpenAI, Claude, Grok, and Cursor services. Currently, there are over 12,000 user reports indicating problems with OpenAI; approximately 1,200 reports concern Claude, and about 1,000 reports relate to Grok. OpenAI responded that ChatGPT and Codex are currently experiencing problems; Anthropic stated that it is investigating the errors in Claude and will work to fix them; SpaceXAI mentioned that Grok is currently malfunctioning and is investigating the cause of the service interruption.