Anthropic experienced a major incident on August 4, 2026 affecting claude.ai and Claude API (api.anthropic.com) and 1 more component, lasting 1h 11m. The incident has been resolved; the full update timeline is below.
Affected components
claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork
Update timeline
- investigating Aug 04, 2026, 08:48 PM UTC
We are currently investigating this issue.
- 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.
- resolved Aug 04, 2026, 09:59 PM UTC
This issue has been resolved.