Anthropic: Degraded performance for Claude Opus 5
Affected components: Claude CoworkClaude API (api.anthropic.com)claude.aiClaude Code
Timeline of updates
- identified
We have identified the cause of elevated errors on requests to Claude Opus 5 and are working on a fix. We will provide an update as soon as possible.
- resolved
This incident has been resolved.
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
41eaece0f9e0b194…
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 2026-08-05 13:51 UTC, resolved after 43 min, 2 update(s).
- Title
- Degraded performance for Claude Opus 5
- Vendor
- Anthropic
- Date
- URL
- https://rewindex.com/company/anthropic/incidents/mgp99sn4ynd4
Anthropic profileRecent Anthropic incidentsAll outages on August 5, 2026Anthropic in August 2026MarkdownJSON