# Claude: Elevated errors on Claude Opus 5 and Haiku 4.5

> Claude status incident “Elevated errors on Claude Opus 5 and Haiku 4.5” on 2026-07-27: impact minor (vendor’s label), 57 min, 5 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/claude/incidents/rkk5x44tndw9
Last updated: 2026-07-27T14:36:43Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-07-27 13:39 UTC · Resolved: 2026-07-27 14:36 UTC · Duration: 57 min
- Updates: 5 · Affected components: Claude Cowork, Claude API (api.anthropic.com), claude.ai, Claude Code
- [Vendor status page: https://stspg.io/996bl17pqbbx](https://stspg.io/996bl17pqbbx)
- [Company: Claude](https://rewindex.com/company/claude.md)

## Timeline of updates

- **investigating** 2026-07-27 13:39 UTC: We are currently investigating this issue.
- **investigating** 2026-07-27 13:41 UTC: We are continuing to investigate this issue.
- **investigating** 2026-07-27 13:42 UTC: We are currently investigating this issue.
- **investigating** 2026-07-27 14:04 UTC: Haiku 4.5 is also returning errors.
- **resolved** 2026-07-27 14:36 UTC: As of 7:34 PST / 14:34 UTC the errors have returned to baseline.

## Cite this

Status incident (vendor impact label: minor) posted by Claude, started 2026-07-27 13:39 UTC, resolved after 57 min, 5 update(s).

- Canonical URL: https://rewindex.com/company/claude/incidents/rkk5x44tndw9
- Citation: Claude, “Elevated errors on Claude Opus 5 and Haiku 4.5” (2026-07-27 13:39 UTC). Archived by Rewindex: https://rewindex.com/company/claude/incidents/rkk5x44tndw9 (CC BY 4.0).
- Markdown link: `[Claude: Elevated errors on Claude Opus 5 and Haiku 4.5 (2026-07-27)](https://rewindex.com/company/claude/incidents/rkk5x44tndw9)`


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Canonical: https://rewindex.com/company/claude/incidents/rkk5x44tndw9 · Markdown: https://rewindex.com/company/claude/incidents/rkk5x44tndw9.md · JSON: https://rewindex.com/api/v1/companies/claude/incidents/rkk5x44tndw9 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T18:43:53.022Z