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Anthropic: Degraded performance for Claude Opus 5 and Claude Haiku 4.5

Affected components: Claude CoworkClaude API (api.anthropic.com)claude.aiClaude Code

Timeline of updates

1. identified2026-08-19 09:42 UTC

   We have identified the cause of elevated errors on requests to Claude Opus 5 and Claude Haiku 4.5 and are working on a fix. We will provide an update as soon as possible.

2. monitoring2026-08-19 10:33 UTC

   A fix has been implemented and we are monitoring the results.

3. resolved2026-08-19 11:02 UTC

   This incident has been resolved.

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). Anthropic profile · Recent Anthropic incidents · Markdown · JSON