Archive · 4 Sep 2026
ChatGPT, Claude and Grok Hit by Simultaneous Outages
Several popular AI services had trouble working at about the same time.
People said ChatGPT, Claude and Grok sometimes would not load or answer questions.
Some users could not log in or open their old conversations.
Others saw error messages or requests that timed out.
An outage-tracking website received thousands of reports, especially for ChatGPT.
OpenAI said ChatGPT and Codex had unusually high error rates.
Anthropic said some Claude models had elevated errors and that engineers were working on a fix.
Grok’s operator said it was investigating service problems.
Gemini and Amazon Web Services were also mentioned in outage reports, but their involvement was less clearly confirmed.
ChatGPT, Claude and Grok experienced overlapping service disruptions on Thursday evening, September 3, 2026.
Users in countries including India and the United States reported failed responses, login problems, timeouts and unresponsive apps or websites.
Downdetector recorded more than 30,000 ChatGPT reports, about 1,400 Claude reports and more than 1,000 Grok reports during the surge.
OpenAI acknowledged elevated errors affecting ChatGPT and Codex, while Anthropic reported disruptions affecting several Claude models.
Google Gemini and Amazon Web Services were also reported as potentially affected, but the articles provided less direct confirmation from those services.
- Who
- Users of ChatGPT, Claude and Grok; OpenAI, Anthropic and SpaceXAI acknowledged or investigated service problems. Google Gemini and Amazon Web Services were also mentioned in reports.
- What
- Overlapping technical disruptions caused failed responses, login difficulties, timeouts, internal errors and unresponsive platforms.
- When
- Thursday evening, September 3, 2026; OpenAI said its incident had been ongoing for at least 36 minutes in one update.
- Where
- Across web, mobile and desktop platforms, with reports from countries including India and the United States; Claude Code and its API were also affected.
- Why
- The articles did not establish one shared cause. Anthropic said it had identified the cause of elevated errors affecting certain Claude model requests.
- Largest reported disruption
- Downdetector recorded more than 30,000 reports for ChatGPT during the main surge.
- United States reports
- Reports exceeded 35,000 for ChatGPT, 1,400 for Claude and 1,200 for Grok in the United States, according to one report.
- India reports
- At about 8:30 p.m., reports in India exceeded 2,800 for ChatGPT, reached about 170 for Claude and exceeded 70 for Grok.
- OpenAI status
- OpenAI reported elevated errors affecting ChatGPT and Codex and said mitigation had been applied while recovery was monitored.
- Claude status
- Anthropic initially identified elevated errors involving Mythos 5.1, Fable 5.1 and Opus 5; later, Opus 4.8 and Opus 5 remained affected.
- Reported symptoms
- Users described failed prompts, unresponsive interfaces, login problems, inaccessible conversations, Gateway Timeout messages and timed-out requests.
- Grok status
- SpaceXAI confirmed it was investigating Grok service or performance issues.
Sources
Major AI platforms ChatGPT, Claude, and Grok hit by simultaneous service disruptions
ChatGPT, Gemini, Claude disrupted as AI outages spread, with AWS and Grok also affected
ChatGPT, Claude and Grok down? Users report widespread outages across major AI platforms
Global AI Blackout: ChatGPT, Claude And Grok Suffer Simultaneous Outage, Users Report Failed Responses
