AI platforms ChatGPT, Claude, and Grok suffer simultaneous global outages

AI service outage ChatGPT Claude AI Grok generative AI

Major artificial intelligence platforms, including OpenAI’s ChatGPT, Anthropic’s Claude, and xAI’s Grok, experienced simultaneous service disruptions on Thursday, September 3. The outages affected millions of users globally, with significant reports emerging from the United States, Spain, Mexico, Argentina, and several other countries.

OpenAI reported elevated error rates for ChatGPT and Codex, attributing the issue to a routing error that began around 7:43 am PT. The company implemented mitigation measures and monitored recovery shortly thereafter. Anthropic confirmed a partial outage affecting multiple Claude models, including Opus, Mythos, and Fable, noting that the cause had been identified and a fix deployed.

xAI reported outages across Grok’s web and mobile platforms. SpaceX, the parent company of xAI, stated that the Grok disruptions resulted from an outage at its Memphis compute center. Additionally, Google’s Gemini service saw reports of degradation and increased error rates during the same period. The AI coding tool Cursor also reported disruptions linked to these upstream service failures.

Entities

Anthropic · ChatGPT · Claude · Google · Microsoft Azure · OpenAI · SpaceX · xAI

Claims

What the coverage asserts, and how many sources carry each claim.

[○ 1 SOURCE] Anthropic confirmed a partial outage affecting several Claude models. www.tomshw.it
[○ 1 SOURCE] OpenAI implemented mitigation measures to address ChatGPT service issues. www.fanpage.it
[○ 1 SOURCE] Cursor reported two open incidents, including upstream issues with Claude. www.tomshw.it
[○ 1 SOURCE] Downdetector recorded a peak of over 6,300 reports globally. www.fanpage.it
[○ 1 SOURCE] OpenAI acknowledged elevated errors across ChatGPT and Codex. oliverwillis.com
[● 3 SOURCES] xAI confirmed problems with its Grok service. oliverwillis.com · www.ibtimes.com.au · 9to5google.com
[● 3 SOURCES] OpenAI implemented a mitigation to address the service disruption. oliverwillis.com · 9to5google.com · au.pcmag.com
[● 8 SOURCES] Major AI services including ChatGPT, Claude, and Grok experienced simultaneous outages on September 3, 2026. oliverwillis.com · 9to5google.com · audioinkradio.com · au.pcmag.com · www.ibtimes.com.au · +3 more
[● 3 SOURCES] The outages may be linked to Microsoft Azure, which also saw a spike in outage reports. 9to5google.com · au.pcmag.com · olhardigital.com.br
[● 5 SOURCES] The AI agent Cursor confirmed an outage caused by the Grok and Claude disruptions. 9to5google.com · au.pcmag.com · olhardigital.com.br · www.thebest.gr · www.pravda.sk
[● 7 SOURCES] Anthropic reported that most Claude models recovered, with the exception of Opus 4.8 and Opus 5. 9to5google.com · au.pcmag.com · revistaplus.com.py · tbreak.com · www.siasat.com · +2 more
[DISPUTED] Google Gemini did not report an official outage during the event. oliverwillis.com · 9to5google.com · au.pcmag.com · olhardigital.com.br · www.thebest.gr · +3 more