Anthropic Claude Outage: Sonnet 4.6 Errors Leave Users Without Responses
Summary
- • Claude experienced a major outage with elevated error rates on Sonnet 4.6
- • Users saw the chatbot appear to think indefinitely without returning any response
- • A separate outage had occurred the previous Tuesday, which Anthropic said it resolved
- • Sonnet 4.6 powers Claude and other parts of Anthropic's product offering
Details
Claude went offline in a major outage affecting Sonnet 4.6
Anthropic confirmed users were experiencing an elevated rate of errors when using Sonnet 4.6, the model that powers Claude and other parts of Anthropic's platform. The outage caused the chatbot to appear stuck in a thinking state without returning responses.
Sonnet 4.6 is the shared underlying model for Claude and broader Anthropic services
The outage affected not just the Claude chatbot interface but other parts of Anthropic's offering that rely on Sonnet 4.6, indicating the model serves as a shared infrastructure component across Anthropic's products.
Second outage this week — prior Tuesday incident Anthropic said was resolved
This is the second outage event in quick succession. Anthropic stated after the Tuesday incident that the issue had been fixed and service had returned to normal, making the recurrence of errors notable.
Infrastructure = service availability and platform stability; Tech Info = details about underlying model/technology; Context = background events that frame the current situation
What This Means
Anthropic's Claude platform suffered back-to-back outages within the same week, with the second affecting Sonnet 4.6 broadly enough to impact both the Claude chatbot and other Anthropic services. Users relying on Claude for real-time responses were left with a non-functional interface that appeared to process queries without completing them. The repeat nature of the disruptions raises questions about the durability of Anthropic's recent fixes.