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xAI: grok-4.6 and grok-4.5 high error rate

MinorStatus: resolvedStarted Resolved (1.5 h)3 updatesstatus.x.ai (opens in new tab)

Affected components: Global (api.x.ai)US (us.api.x.ai)

Timeline of updates

  1. investigating

    We are investigating an issue with one of our GPU clusters

  2. investigating

    Some customers will still see some elevated TTFT on grok-4.6

  3. resolved

    The incident has been fully resolved.

Archive proof

Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert.

How the archive is checked, and what it cannot prove.

This incident predates live tracking (October 17, 2026). It came from the vendor’s own published history, which is not covered by checkpoints.

Impact, status and times are the vendor’s own, as last archived. View on status.x.ai (opens in new tab).

Cite this

Status incident (vendor impact label: minor) posted by xAI, started 2026-08-17 21:57 UTC, resolved after 1.5 h, 3 update(s).

Title
grok-4.6 and grok-4.5 high error rate
Vendor
xAI
Date
URL
https://rewindex.com/company/xai/incidents/INC5a3245c3

xAI profileRecent xAI incidentsAll outages on August 17, 2026xAI in August 2026MarkdownJSON