Anthropic's Claude AI down for users due to 'elevated error rates'

Anthropic’s Claude AI is down for users, as they report issues accessing the chatbot. Downdetector data showed over 1,500 users reported about the problems with Claude. Anthropic has acknowledged the outage, warning users about "elevated error rates" in its two top AI models, Sonnet 4.5 and Opus 4.5. The company is continuing to work on a fix for this issue.