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09/04/2026

Simultaneous ChatGPT, Claude, and Grok Outages Disrupt AI Users

What happened: On Thursday morning, OpenAI's ChatGPT and Codex, Anthropic's Claude, and xAI's Grok all experienced overlapping outages, with disruptions lasting from 7:43 AM PT to early afternoon.

Simultaneous ChatGPT, Claude, and Grok Outages Disrupt AI Users

What happened: On Thursday morning, OpenAI's ChatGPT and Codex, Anthropic's Claude, and xAI's Grok all experienced overlapping outages, with disruptions lasting from 7:43 AM PT to early afternoon. Downdetector recorded peak user reports of 38,000 for ChatGPT and around 1,400 each for Claude and Grok. All services were restored by 12:55 PM ET. OpenAI cited a "routing error," while Anthropic and xAI referenced infrastructure issues but did not disclose root causes. Microsoft Azure, which underpins some of these services, also reported outages during the same window.

Why it matters: The simultaneous disruption of three leading AI platforms highlights the ecosystem's dependency on shared infrastructure and the fragility of cloud-based AI services. While no common cause was officially confirmed, speculation around Azure's role points to potential systemic risks in the AI supply chain. For users, the outages underscored how deeply integrated generative AI has become in daily workflows.

Source: Decrypt