Grok, the generative AI chatbot developed by xAI, is experiencing service issues that have triggered an investigation into the disruption. The incident adds to a growing list of outages the platform has weathered in 2026, most of them tied to the challenge of keeping GPU clusters happy under heavy load.
A pattern of brief but recurring disruptions
The most notable outage of the year hit on August 17, when xAI reported elevated time-to-first-token latency and 500 error rates across both its grok-4.6 and grok-4.5 models. The root cause was traced to a GPU cluster problem. The incident began at 5:57 PM EDT and was resolved by 7:28 PM EDT, a window of roughly 1 hour and 30 minutes.
Before that, Grok logged a longer outage on March 10 that lasted 2 hours and 24 minutes. Another disruption struck on July 1, running about an hour, and was linked to Grok Build 0.1.
Current status and what users are seeing
