# Anthropic: Elevated errors on Claude Sonnet 4

- Impact (vendor’s label): major
- Status: resolved
- Started: 2025-08-20 02:58 UTC · Resolved: 2025-08-20 06:08 UTC · Duration: 3.2 h
- Updates: 1
- [Vendor status page: https://status.anthropic.com/incidents/b1960vfmcx1f](https://status.anthropic.com/incidents/b1960vfmcx1f)
- [Company: Anthropic](https://rewindex.com/company/anthropic.md)

## Timeline of updates

- **resolved** 2025-08-20 06:08 UTC: This incident has 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/b1960vfmcx1f · Markdown: https://rewindex.com/company/anthropic/incidents/b1960vfmcx1f.md · JSON: https://rewindex.com/api/v1/companies/anthropic/incidents/b1960vfmcx1f · Generated 2026-10-18T09:41:13.591Z