Grok Build and Grok 4.6 web UI go down at once, fueling speculation of a Colossus 1 outage
PawelHuryn · x · 2026-09-03
Pawel Huryn reports that Grok Build, Claude Code access, and Grok 4.6 via the web UI all stopped working simultaneously, alongside a screenshot of the Colossus 1 datacenter, asking whether something is wrong with the cluster. The simultaneous failures across independent entry points point to an infrastructure-level incident rather than a single product bug; xAI has not yet confirmed.
Related event: ChatGPT, Claude and Grok Suffer Rare Simultaneous Outage(101 posts)→
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