Anthropic experienced a minor incident on August 12, 2026 affecting claude.ai and Claude API (api.anthropic.com) and 1 more component, lasting 4h 16m. 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 12, 2026, 01:50 PM UTC
We are investigating elevated errors on requests to multiple models. We will provide an update as soon as possible.
- identified Aug 12, 2026, 04:10 PM UTC
We have identified an issue which resulted in errors across multiple models. At this time, errors are primarily impacting Claude Fable 5 and we are working to fully resolve these issues.
- identified Aug 12, 2026, 05:28 PM UTC
We are continuing to work to resolve an issue resulting in slightly elevated errors on requests to Claude Fable 5. We will provide an update as soon as possible.
- resolved Aug 12, 2026, 06:07 PM UTC
This issue has been resolved.