Gemini and Grok have begun to recover from a widespread service outage that affected multiple AI platforms worldwide on Thursday, while ChatGPT and Claude continue to experience significant issues.
A multiple major AI services worldwide experienced a rare simultaneous outage, with ChatGPT, Claude, and Grok all reporting failures, affecting a vast number of users globally. The massive failures affected users in the United States, Argentina, Brazil, Chile, Colombia, Spain, France, Mexico, Portugal, and other regions, according to data from Downdetector, a platform that tracks technical issues.
The exact cause of the outages remains unclear, but technical teams from OpenAI, Anthropic, and Grok are working diligently to resolve the issues.
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Downdetector, which aggregates user reports to monitor service disruptions, showed a spike in complaints from users across the globe. The platform’s data indicated that the outages were widespread, affecting users in both urban and rural areas.
The simultaneous outages disrupted services for millions of users relying on these AI assistants for various tasks. Downdetector, a platform that monitors internet service disruptions, reported problems with the four most popular chatbots -ChatGPT, Gemini, Claude, and Grok- across more than 70 countries. Users reported difficulties accessing both the web and mobile applications of these AI platforms.
THE BIG QUESTION: WHAT CONNECTS THEM?
ChatGPT, Claude, Gemini and Grok going down around the same time is unusual.
Possible explanations include a shared cloud/infrastructure failure, networking/CDN issues, capacity overload or something more serious.
No common cause has… pic.twitter.com/1vU0ct7uwl
— Open Source Intelligence (@osint42) September 3, 2026
While Gemini and Grok have started to restore normal service, Claude and ChatGPT are still grappling with system failures. The disruption affected various versions of Claude, including Mythos 5.1, Fable 5.1, Opus 5, Opus 4.8, and Opus 4.6. OpenAI confirmed that both ChatGPT and Codex were impacted, and SpaceXAI acknowledged the service interruption for Grok.
The outage has been particularly severe for ChatGPT users. According to Downdetector, nearly 38,000 users in the United States reported issues by 11:00 AM local time (3:00 PM GMT). The data revealed that 80% of the reported problems were directly related to the chatbot, with an additional 8% affecting Codex, OpenAI’s code-focused AI assistant, and 7% impacting the mobile application.
BREAKING: ChatGPT‑Google SSO integration experiencing major outage.
Reports:
• Web & desktop ChatGPT apps are widely broken. Google‑based SSO login fails, users signed up via Google cannot access their accounts.
• Interestingly, third‑party intermediate / middleware API… pic.twitter.com/lSQmv9zGmw— QuantDinger (@QuantDinger_EN) September 3, 2026
Impact and Response
The outage has had a significant impact on users who depend on these AI assistants for both personal and professional tasks. Businesses experienced delayed customer support responses, while individuals faced disruptions in their daily routines. The widespread nature of the outage highlighted the growing reliance on AI-assisted technologies and the potential consequences of such disruptions.
OpenAI’s official system status page indicated that they were “experiencing problems” and that there were “critical errors in ChatGPT and Codex.” The message assured users that corrective measures had been applied and that the recovery process was being monitored closely. This outage comes just two days after a similar connectivity issue affected the platform, raising concerns about the frequency and impact of such disruptions.
The recovery efforts by Gemini and Grok offer a glimmer of hope, but the ongoing issues with ChatGPT and Claude serve as a stark reminder of the challenges that lie ahead. As the world becomes increasingly reliant on AI-assisted technologies, the need for reliable and uninterrupted service becomes more critical than ever.
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