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● Covered by 4 sources · 5 reportsMedium impact3 negative2 neutral

ChatGPT, Claude, and Grok AI platforms experience simultaneous outages

🔄 Updated 27d ago — new reporting from Hacker News Front Page
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Key points

  • ChatGPT, Claude, and Grok are all down.
  • Outages confirmed on respective dashboards.
  • Microsoft Azure also shows a spike in outage reports.
  • Google's Gemini appears unaffected.
  • Google also experienced significant service interruptions.
  • Anthropic reported a partial outage for Claude Mythos 5.1, Fable 5.1, and Opus 5 at 9:23 am Eastern.
  • Anthropic identified the cause 15 minutes later and deployed a fix.
  • Claude's issue was resolved by 12:16 pm.
  • Claude Sonnet 5 also had elevated errors after noon.
  • OpenAI reported elevated errors for ChatGPT and Codex at 10:43 am Thursday.
  • OpenAI's issue was resolved by 12:55 pm.
  • Grok currently displays a user-facing error message.
  • SpaceXAI apologized for the outage.
  • SpaceXAI's Memphis data center was the source of the issue.
  • Grok was unavailable for over three hours.
  • SpaceXAI also apologized to unnamed "compute partners."
  • Grok's outage began at 6:30 AM PT.
  • The incident affected Grok on X, Android, and iOS apps.
  • OpenAI attributed its outage to a routing error.
  • OpenAI's routing error started around 7:43 am PT on Thursday, September 3.
  • OpenAI implemented a solution by 8:17 am PT on Thursday.
  • Anthropic declined to comment on the cause of its outages.
  • SpaceX, xAI's parent company, did not respond to WIRED's request for comment.

Widespread AI Service Disruptions

Several prominent artificial intelligence platforms, including OpenAI's ChatGPT, Anthropic's Claude, and X's Grok, are currently experiencing significant outages. User reports on DownDetector have surged, and the companies have confirmed the disruptions on their official status dashboards. This marks a notable event as multiple major AI services are affected concurrently.

Potential Link to Microsoft Azure

The simultaneous nature of these outages points to a possible common infrastructure problem. Microsoft Azure, a cloud service provider used by all three affected AI platforms, is also reporting a spike in its own outage reports. This correlation suggests that issues within Azure's infrastructure could be the root cause of the widespread AI service interruptions.

Unaffected Services and Broader Impact

While ChatGPT, Claude, and Grok are down, Google's Gemini AI service appears to be operational and unaffected by these issues. Despite some user reports, Google has not confirmed any outage for Gemini. The widespread disruption of these major AI tools impacts a broad user base reliant on them for various tasks, highlighting the interconnectedness of cloud-based services.

Updates

🕒 2026-09-04 · new reporting from Hacker News Front Page
  • OpenAI attributed its outage to a routing error.
  • OpenAI's routing error started around 7:43 am PT on Thursday, September 3.
  • OpenAI implemented a solution by 8:17 am PT on Thursday.
  • Anthropic declined to comment on the cause of its outages.
  • SpaceX, xAI's parent company, did not respond to WIRED's request for comment.
🕒 2026-09-04 · new reporting from Engadget
  • SpaceXAI apologized for the outage.
  • SpaceXAI's Memphis data center was the source of the issue.
  • Grok was unavailable for over three hours.
  • SpaceXAI also apologized to unnamed "compute partners."
  • Grok's outage began at 6:30 AM PT.
  • The incident affected Grok on X, Android, and iOS apps.
🕒 2026-09-03 · new reporting from Hacker News Front Page, Ars Technica
  • Google also experienced significant service interruptions.
  • Anthropic reported a partial outage for Claude Mythos 5.1, Fable 5.1, and Opus 5 at 9:23 am Eastern.
  • Anthropic identified the cause 15 minutes later and deployed a fix.
  • Claude's issue was resolved by 12:16 pm.
  • Claude Sonnet 5 also had elevated errors after noon.
  • OpenAI reported elevated errors for ChatGPT and Codex at 10:43 am Thursday.
  • OpenAI's issue was resolved by 12:55 pm.
  • Grok currently displays a user-facing error message.

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Primary sources

GitHub HackerNews/API

How outlets covered it

Frontier AI models from OpenAI, Anthropic, and xAI experienced outages on Thursday morning, causing downtime for their respective chatbots. While xAI attributed its Grok outage to an issue at a Memphis compute center, OpenAI cited a routing error, and Anthropic declined to comment on the cause of its Claude outages, leaving the reason for the simultaneous disruptions unclear.

SpaceXAI experienced a data center outage in Memphis, causing Grok to be unavailable for over three hours and impacting unnamed "compute partners." This incident also coincided with service disruptions for Anthropic's Claude and OpenAI's ChatGPT, raising questions about potential connections given Anthropic's existing compute lease agreement with SpaceXAI.

OpenAI, Anthropic, xAI, and Google experienced significant, overlapping service interruptions for their cloud-based AI models on Thursday morning. This rare simultaneous downtime affected multiple prominent AI services, indicating potential shared infrastructure vulnerabilities or widespread operational challenges within the AI industry.

Major AI platforms including OpenAI's ChatGPT, Anthropic's Claude, and X's Grok are currently experiencing widespread outages. The simultaneous disruption across these services suggests a potential underlying issue with Microsoft Azure, which many of these platforms utilize for cloud services.

Major AI services including OpenAI's ChatGPT, Anthropic's Claude, and xAI's Grok all experienced simultaneous outages. This widespread disruption affected multiple prominent AI platforms, raising questions about potential common infrastructure dependencies or coordinated issues.