# Anthropic: Elevated error rates on Sonnet 4.5

> Anthropic status incident “Elevated error rates on Sonnet 4.5” on 2025-12-19: impact minor (vendor’s label), 9.3 h, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/anthropic/incidents/8d87293jq0mk
Last updated: 2025-12-19T13:52:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2025-12-19 04:34 UTC · Resolved: 2025-12-19 13:52 UTC · Duration: 9.3 h
- Updates: 1
- [Vendor status page: https://status.anthropic.com/incidents/8d87293jq0mk](https://status.anthropic.com/incidents/8d87293jq0mk)
- [Company: Anthropic](https://rewindex.com/company/anthropic.md)

## Timeline of updates

- **resolved** 2025-12-19 13:52 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._

## Cite this

Status incident (vendor impact label: minor) posted by Anthropic, started 2025-12-19 04:34 UTC, resolved after 9.3 h, 1 update(s).

- Canonical URL: https://rewindex.com/company/anthropic/incidents/8d87293jq0mk
- Citation: Anthropic, “Elevated error rates on Sonnet 4.5” (2025-12-19 04:34 UTC). Archived by Rewindex: https://rewindex.com/company/anthropic/incidents/8d87293jq0mk (CC BY 4.0).
- Markdown link: `[Anthropic: Elevated error rates on Sonnet 4.5 (2025-12-19)](https://rewindex.com/company/anthropic/incidents/8d87293jq0mk)`


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Canonical: https://rewindex.com/company/anthropic/incidents/8d87293jq0mk · Markdown: https://rewindex.com/company/anthropic/incidents/8d87293jq0mk.md · JSON: https://rewindex.com/api/v1/companies/anthropic/incidents/8d87293jq0mk · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T14:56:25.434Z