Breaking

xAI Confirms Grok Models Outage as ChatGPT and Claude Also Fail

September 3, 2026 at 12:57 EDT

Foundation Models
Software Dev & Coding

xAI confirmed a models outage for Grok on September 3, 2026, taking the chatbot and related APIs offline while OpenAI's ChatGPT and Anthropic's Claude separately reported widespread errors in the same window. The company said it was working to restore service as quickly as possible and did not publish a cause.

Sep 3, 2026 · xAI

Grok models go offline

xAI posted a models outage at 13:30 UTC, hitting Grok on web, apps, U.S. APIs, and Grok in X, while ChatGPT and Claude also failed in the same window.

13:30

UTC · Grok incident posted

xAI products in outage

xAI products still available

16:16

UTC · Claude marked resolved

xAI dashboard split

Same unit: listed products. Column height matches the count.

In outage
Web, apps, U.S. APIs, Grok in X, Build, plugins

Still available
SSO, Docs, website, API console, eu-west-1 API

How the window unfolded

1 · 13:26 UTC

Claude elevated errors

→

2 · 13:30 UTC

Grok models outage

→

3 · 13:41 UTC

Cursor Grok-model hit

→

4 · later

OpenAI and Claude recover

Recovered faster

ChatGPT and Claude returned after a mitigation and a deployed fix. Anthropic closed its incident at 16:16 UTC.

Still investigating

Grok remained in a models outage with no public root cause. Downstream coding agents that call Grok stayed degraded.

Unconfirmed

No lab named a shared root cause

Azure outage reports spiked in the same window, and all three labs use Azure for parts of their stack. That remains a theory, not a confirmed finding. Gemini had no official outage.

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