Anthropic: Elevated errors on Claude Opus 5
Affected components: Claude CoworkClaude API (api.anthropic.com)claude.aiClaude Code
Timeline of updates
- investigating
We are currently investigating this issue.
- resolved
As of 4:47 PST / 11:47 UTC the errors have returned to baseline.
Archive proof
Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert. That proves this record existed by then and has not been changed since, by anyone, Rewindex included.
How the archive is checked, and what it cannot prove.
First version captured
In the 2026-10-17 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
2153f509228637a0…
Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab).
Cite this
Status incident (vendor impact label: minor) posted by Anthropic, started 2026-07-27 11:27 UTC, resolved after 1.1 h, 2 update(s).
- Title
- Elevated errors on Claude Opus 5
- Vendor
- Anthropic
- Date
- URL
- https://rewindex.com/company/anthropic/incidents/mfdtrknpxghq
Anthropic profileRecent Anthropic incidentsAll outages on July 27, 2026Anthropic in July 2026MarkdownJSON