On Sunday night, users encountered significant issues with Claude AI, as indicated by a surge in reports on Downdetector. Problems were particularly noted in both Claude Code and Claude Chat functionalities, leading to widespread user frustration.
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. The company had not announced a timeline for a full recovery at the time of publication. 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.
The disruption extended beyond the main chatbot interface, according to user reports on Downdetector and posts on X. We will provide an update soon.”
41% of reported problems involved Claude Code, 31% involved Claude Chat, and 19% concerned the app, according to Downdetector. 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.
