Anthropic incident

Elevated errors across many models

Resolved after 1 hour 11 minutes, affecting claude.ai and Claude API (api.anthropic.com) and 1 more, on August 4, 2026.

investigating Aug 04, 2026, 09:04 PM UTC

We have identified an issue which resulted in some users experiencing issues when attempting to log into Anthropic services, including Claude.ai and Claude Code via oAuth. Additionally, some users saw errors when making requests to models. At this time, we have seen success rates recover and are monitoring closely to ensure there are no further issues.

Started
Aug 04, 2026, 08:48 PM UTC
Resolved
Aug 04, 2026, 09:59 PM UTC
Duration
1h 11m
Detected by Pingoru
Aug 04, 2026, 08:48 PM UTC

Affected components

claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork

Update timeline

  1. investigating Aug 04, 2026, 08:48 PM UTC

    We are currently investigating this issue.

  2. investigating Aug 04, 2026, 09:04 PM UTC

    We have identified an issue which resulted in some users experiencing issues when attempting to log into Anthropic services, including Claude.ai and Claude Code via oAuth. Additionally, some users saw errors when making requests to models. At this time, we have seen success rates recover and are monitoring closely to ensure there are no further issues.

  3. resolved Aug 04, 2026, 09:59 PM UTC

    This issue has been resolved.

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