Claude's Sonnet 4.6 model experienced elevated error rates for 3.2 hours, causing widespread service disruptions across claude.ai, the API, and console. Users reported unresponsive prompts, repeated "taking longer than usual" messages, 529 overloaded errors, and complete inability to access chats or use Claude's code features. The issue was identified and resolved with a fix implementation, restoring normal service functionality.
The incident is now resolved. Sonnet 4.6 exhibited errors above baseline between 23:00 PT / 7:00 UTC and 1:50 PT / 9:50 UTC.
A fix has been implemented and we are monitoring the results.
The issue has been identified and a fix is being implemented.
We are continuing to investigate this issue.
We are currently investigating this issue.
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