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: Grok Suffers Widespread Outage, Claude Reportedly Down at the Same Time(6 posts)→
More from Models
- Codex and Claude down at the same time, sending users to open models — omarsar0 · 2026-09-03
- 15.9M-parameter OCR model Kraken PP-OCRv6 beats VLMs hundreds of times larger — vanstriendaniel · 2026-09-03
- Codex appears down with 404 errors, user speculates OpenAI 'astra' rollout — zats · 2026-09-03
- ChatGPT and Claude throw simultaneous request errors, a first for this user — herbiebradley · 2026-09-03
- ChatGPT and Codex appear to be down at the same time — brandon_galang · 2026-09-03
- Sam Altman: our system now discovers new knowledge, does science, and writes complex software — haider1 · 2026-09-03