# Anthropic: Elevated errors on Claude Sonnet 4.0

> Anthropic status incident “Elevated errors on Claude Sonnet 4.0” on 2025-09-04: impact minor (vendor’s label), 16 min, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/anthropic/incidents/k00ft02cpx7h
Last updated: 2025-09-04T07:00:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2025-09-04 06:44 UTC · Resolved: 2025-09-04 07:00 UTC · Duration: 16 min
- Updates: 1
- [Vendor status page: https://status.anthropic.com/incidents/k00ft02cpx7h](https://status.anthropic.com/incidents/k00ft02cpx7h)
- [Company: Anthropic](https://rewindex.com/company/anthropic.md)

## Timeline of updates

- **resolved** 2025-09-04 07:00 UTC: As of 23:50 PT / 6:50 UTC, we have mitigated the incident.

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

## Cite this

Status incident (vendor impact label: minor) posted by Anthropic, started 2025-09-04 06:44 UTC, resolved after 16 min, 1 update(s).

- Canonical URL: https://rewindex.com/company/anthropic/incidents/k00ft02cpx7h
- Citation: Anthropic, “Elevated errors on Claude Sonnet 4.0” (2025-09-04 06:44 UTC). Archived by Rewindex: https://rewindex.com/company/anthropic/incidents/k00ft02cpx7h (CC BY 4.0).
- Markdown link: `[Anthropic: Elevated errors on Claude Sonnet 4.0 (2025-09-04)](https://rewindex.com/company/anthropic/incidents/k00ft02cpx7h)`


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Canonical: https://rewindex.com/company/anthropic/incidents/k00ft02cpx7h · Markdown: https://rewindex.com/company/anthropic/incidents/k00ft02cpx7h.md · JSON: https://rewindex.com/api/v1/companies/anthropic/incidents/k00ft02cpx7h · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T16:12:38.091Z