# Claude: Elevated errors for Claude Sonnet 5

- Impact (vendor’s label): major
- Status: resolved
- Started: 2026-09-03 12:37 UTC · Resolved: 2026-09-03 12:56 UTC · Duration: 19 min
- Updates: 3 · Affected components: Claude Cowork, Claude API (api.anthropic.com), claude.ai, Claude Code
- [Vendor status page: https://stspg.io/jt14jk41pjsf](https://stspg.io/jt14jk41pjsf)
- [Company: Claude](https://rewindex.com/company/claude.md)

## Summary

Claude Sonnet 5 requests experienced elevated errors across claude.ai, Claude API (api.anthropic.com), Claude Code and Claude Cowork in a major-impact incident starting 2026-09-03 12:37 UTC. A fix was implemented by 12:47 UTC; the incident was resolved at 2026-09-03 12:56 UTC, with a reported duration of 18 min. _(machine-written, sol)_
## Timeline of updates

- **investigating** 2026-09-03 12:37 UTC: We are investigating elevated errors on requests to Claude Sonnet 5. We will provide an update as soon as possible.
- **monitoring** 2026-09-03 12:47 UTC: A fix has been implemented and we are monitoring the results.
- **resolved** 2026-09-03 12:56 UTC: This incident has been resolved.

## Rewindex changes for this incident

- 2026-09-03 12:37 UTC: [Major incident: Elevated errors for Claude Sonnet 5](https://rewindex.com/change/i3cf2a1d29ae856.md)


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Canonical: https://rewindex.com/company/claude/incidents/288w7p4hk1l1 · Markdown: https://rewindex.com/company/claude/incidents/288w7p4hk1l1.md · JSON: https://rewindex.com/api/v1/companies/claude/incidents/288w7p4hk1l1 · Generated 2026-10-18T09:53:36.231Z