# Anthropic: Elevated errors on Claude Opus 4.8 (Fast Mode)

> Anthropic status incident “Elevated errors on Claude Opus 4.8 (Fast Mode)” on 2026-06-09: impact minor (vendor’s label), 29 min, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/anthropic/incidents/cmsxwks3fzd9
Last updated: 2026-06-09T03:42:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-06-09 03:13 UTC · Resolved: 2026-06-09 03:42 UTC · Duration: 29 min
- Updates: 1
- [Vendor status page: https://status.anthropic.com/incidents/cmsxwks3fzd9](https://status.anthropic.com/incidents/cmsxwks3fzd9)
- [Company: Anthropic](https://rewindex.com/company/anthropic.md)

## Timeline of updates

- **resolved** 2026-06-09 03:42 UTC: This issue has been resolved. Claude Opus 4.8 (Fast Mode) saw elevated errors from 7:50 PM PT / 02:50 UTC to 8:30 PM PT / 03:30 UTC.

_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 2026-06-09 03:13 UTC, resolved after 29 min, 1 update(s).

- Canonical URL: https://rewindex.com/company/anthropic/incidents/cmsxwks3fzd9
- Citation: Anthropic, “Elevated errors on Claude Opus 4.8 (Fast Mode)” (2026-06-09 03:13 UTC). Archived by Rewindex: https://rewindex.com/company/anthropic/incidents/cmsxwks3fzd9 (CC BY 4.0).
- Markdown link: `[Anthropic: Elevated errors on Claude Opus 4.8 (Fast Mode) (2026-06-09)](https://rewindex.com/company/anthropic/incidents/cmsxwks3fzd9)`


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Canonical: https://rewindex.com/company/anthropic/incidents/cmsxwks3fzd9 · Markdown: https://rewindex.com/company/anthropic/incidents/cmsxwks3fzd9.md · JSON: https://rewindex.com/api/v1/companies/anthropic/incidents/cmsxwks3fzd9 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T15:32:18.337Z