Users of major artificial intelligence platforms faced significant access issues on Thursday as OpenAI, Anthropic, and SpaceXAI reported concurrent service outages. The disruptions affected several of the industry’s most widely used generative AI models, according to official status pages and third-party monitoring services.
OpenAI acknowledged technical difficulties shortly after users began flooding Downdetector with reports. The company stated it was actively investigating elevated error rates affecting both its flagship ChatGPT chatbot and the Codex AI coding tool. While OpenAI did not specify the root cause, the scale of reports on Downdetector suggests the incident impacted tens of thousands of users attempting to access their accounts or utilize model interfaces.
This report draws on information published by chicagotribune.com.
Simultaneously, Anthropic reported issues with its high-end model lineup. While the company confirmed that several services had returned to normal operation by late afternoon, it noted that it was continuing to resolve lingering disruptions specifically tied to its Opus 4.8 and Opus 5 offerings. SpaceXAI, the developer behind the Grok chatbot, also confirmed connectivity issues via its public status page, marking a rare moment where three of the leading US AI model makers experienced technical failures within the same 24-hour window.
The events highlight the growing reliance on centralized cloud-based AI infrastructure. Unlike local software, these tools depend on constant connectivity to server clusters that remain prone to intermittent downtime during peak traffic or maintenance cycles. As of Thursday evening, all three companies indicated that engineering teams were working toward full service restoration.