Simultaneous OpenAI, Anthropic, xAI outages; cause undisclosed

ChatGPT, Claude, and Grok experienced near-simultaneous outages on 2026-09-03, with no official cause disclosed. The synchronized nature suggests a shared dependency (e.g., cloud provider, DNS, or network layer) rather than independent failures. The lack of transparency raises concerns about systemic infrastructure resilience and potential coordinated disruption.