Incident report · read from Anthropic's status page

Anthropic incident: Degraded performance on Claude Sonnet 5

Resolved after 15 m (3 Aug 2026, 15:13–15:29 UTC), impact minor, affecting Claude Cowork, Claude API (api.anthropic.com), claude.ai and Claude Code.

Timeline

1. 3 Aug 2026 at 15:13 UTC investigating

   We are currently investigating this issue.

2. 3 Aug 2026 at 15:29 UTC resolved

   As of 15:20 UTC (8:20am PT), error rates on Claude Sonnet 5 have returned to baseline. This incident is resolved.

Affected components

• Claude Cowork: degraded for 15 m
• Claude API (api.anthropic.com): degraded for 15 m
• claude.ai: degraded for 15 m
• Claude Code: degraded for 15 m

Source

Anthropic's own report of this incident, on Anthropic's status page. This page is a record of Anthropic's own report; where the two disagree, theirs is right.

Last checked 8 Sep 2026 at 16:16 UTC.

Must Have AI is a parody and is not affiliated with, endorsed by or connected to OpenAI, Anthropic or Google. Every outage shown here is read from the provider's own public status page.