Anthropic: Elevated errors on Claude 4 Sonnet
Timeline of updates
- resolved
The issue has been mitigated as of 12:28 PT / 19:28 UTC.
From Anthropic’s published incident history: for incidents before Rewindex began polling this status page, only the final update text is available.
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.anthropic.com (opens in new tab).
Cite this
Status incident (vendor impact label: minor) posted by Anthropic, started 2025-07-23 19:21 UTC, resolved after 13 min, 1 update(s).
- Title
- Elevated errors on Claude 4 Sonnet
- Vendor
- Anthropic
- Date
- URL
- https://rewindex.com/company/anthropic/incidents/lpdxfyb13v75
Anthropic profileRecent Anthropic incidentsAll outages on July 23, 2025Anthropic in July 2025MarkdownJSON