# Claude: Elevated errors on Opus 4 and Sonnet 3.5 (new)

> Claude status incident “Elevated errors on Opus 4 and Sonnet 3.5 (new)” on 2025-09-27: impact minor (vendor’s label), 4.8 h, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/claude/incidents/n9pl4hny4mlt
Last updated: 2025-09-27T22:19:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2025-09-27 17:29 UTC · Resolved: 2025-09-27 22:19 UTC · Duration: 4.8 h
- Updates: 1
- [Vendor status page: https://status.claude.com/incidents/n9pl4hny4mlt](https://status.claude.com/incidents/n9pl4hny4mlt)
- [Company: Claude](https://rewindex.com/company/claude.md)

## Timeline of updates

- **resolved** 2025-09-27 22:19 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 Claude, started 2025-09-27 17:29 UTC, resolved after 4.8 h, 1 update(s).

- Canonical URL: https://rewindex.com/company/claude/incidents/n9pl4hny4mlt
- Citation: Claude, “Elevated errors on Opus 4 and Sonnet 3.5 (new)” (2025-09-27 17:29 UTC). Archived by Rewindex: https://rewindex.com/company/claude/incidents/n9pl4hny4mlt (CC BY 4.0).
- Markdown link: `[Claude: Elevated errors on Opus 4 and Sonnet 3.5 (new) (2025-09-27)](https://rewindex.com/company/claude/incidents/n9pl4hny4mlt)`


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Canonical: https://rewindex.com/company/claude/incidents/n9pl4hny4mlt · Markdown: https://rewindex.com/company/claude/incidents/n9pl4hny4mlt.md · JSON: https://rewindex.com/api/v1/companies/claude/incidents/n9pl4hny4mlt · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T16:42:32.551Z