Users reported widespread issues with Claude AI on Sunday night. Reports on Downdetector spiked as users flagged problems across Claude Code and Claude Chat.
According to Downdetector, 41% of reported problems involved Claude Code, 31% involved Claude Chat, and 19% concerned the app. Other users also reported login issues, website errors and latency.
Anthropic acknowledged the incident on its service status page, saying it had identified the cause of the disruption and that engineers were working to restore normal operations.
The company had not announced a timeline for a full recovery at the time of publication.
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What services were affected?
According to user reports on Downdetector and posts on X, the disruption extended beyond the main chatbot interface.
Technology commentator Alex Getman reported on X that Claude.ai, the Claude API, Claude Code and Claude for Workspaces (Cowork) were all experiencing degraded performance. Getman also reported that the elevated errors were affecting several Claude models, Mythos, Fable, Opus 5 and Opus 4.8.
On its service status page, Anthropic wrote, “We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, and Claude Opus 4.8. We will provide an update soon.”
(This is a developing story)
