Incident report · read from Anthropic's status page

Anthropic incident: Elevated errors on several models

Resolved after 2 h 43 m (21 Jul 2026, 15:35–18:18 UTC), impact critical, affecting Claude Cowork, Claude API (api.anthropic.com), claude.ai and Claude Code.

Timeline

1. 21 Jul 2026 at 15:35 UTC investigating

   We are currently investigating this issue.

2. 21 Jul 2026 at 15:51 UTC identified

   The issue has been identified and a fix is being implemented.

3. 21 Jul 2026 at 17:07 UTC monitoring

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

4. 21 Jul 2026 at 18:18 UTC resolved

   From 8:28am PT / 15:28 UTC through 9:26am PT / 16:26 UTC users experienced elevated errors on requests to multiple Claude models. This issue has been resolved.

Affected components

• Claude Cowork: major outage for 16 m
• Claude API (api.anthropic.com): major outage for 16 m
• claude.ai: major outage for 16 m
• Claude Code: major outage for 16 m
• Claude Cowork: partial outage for 1 h 15 m
• Claude API (api.anthropic.com): partial outage for 1 h 15 m
• claude.ai: partial outage for 1 h 15 m
• Claude Code: partial outage for 1 h 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 16:15 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.