ChatGPT, Claude, Gemini and Grok Suffer Simultaneous Outages
On the morning of Sept. 3, multiple leading AI chatbots—OpenAI's ChatGPT, Anthropic's Claude, Google's Gemini and xAI's Grok—went down around the same time, roughly 9:30 a.m. ET. Anthropic confirmed an infrastructure issue affected Claude.ai, Claude Code, Claude Cowork and its API, restoring service by about 12:16 p.m. ET, while other providers' services also returned to normal later that day.