# Anthropic: Elevated errors on Claude 4 Sonnet

- Impact (vendor’s label): major
- Status: resolved
- Started: 2025-07-23 13:20 UTC · Resolved: 2025-07-23 14:43 UTC · Duration: 1.4 h
- Updates: 1
- [Vendor status page: https://status.anthropic.com/incidents/9px1qykyb9w4](https://status.anthropic.com/incidents/9px1qykyb9w4)
- [Company: Anthropic](https://rewindex.com/company/anthropic.md)

## Timeline of updates

- **resolved** 2025-07-23 14:43 UTC: We've seen two big spikes of errors, one between 13:05 UTC and 13:24 UTC, and another one between 13:50 UTC and 14:18 UTC. The issue has now been resolved.

_From the vendor’s published history: only the final update text is available for incidents before Rewindex began polling this page._


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Canonical: https://rewindex.com/company/anthropic/incidents/9px1qykyb9w4 · Markdown: https://rewindex.com/company/anthropic/incidents/9px1qykyb9w4.md · JSON: https://rewindex.com/api/v1/companies/anthropic/incidents/9px1qykyb9w4 · Generated 2026-10-18T13:49:27.327Z